If a photon is absorbed by a nucleus, the energy of nucleus _____.

Federal Mock 4
Physics
Nuclear Physics
Radioactivity
A) Remains same
Show Explanation
B) Increase slightly
Show Explanation
C) Decreases slightly
Show Explanation
D) It will pass the nucleus
Show Explanation

Ten complete waves passes through a point in 2 seconds. If the wavelength is 20 cm, what is the speed of the wave?

Federal Mock 4
Physics
Wave Motion and Sound
A) 1 m/s
Show Explanation
B) 10 cm/s
Show Explanation
C) 2 m/s
Show Explanation
D) 40 cm/s
Show Explanation

A body of mass 1 kg is rotated in a horizontal circle of radius 1 m and moves with a velocity of 2m/s. The work done in 10 revolutions is:

Federal Mock 4
Physics
Work, Power & Energy
A) 40 J
Show Explanation
B) 20 J
Show Explanation
C) 4×2π (10)J
Show Explanation
D) zero
Show Explanatio

What should be the ratio of kinetic energy to total energy for simple harmonic
oscillator?

Federal Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) 1 − (x 2 / xo 2 )
Show Explanation
B) 1
Show Explanation
C) (xo 2 − x 2 )
Show Explanation
D) ½ (x 2
Show Explanation

The kinetic energy of a projectile at the highest point is half of its kinetic energy. The angle of projection is

Federal Mock 4
Physics
Forces and Motion
Motion in Two Dimensions
A) 00
Show Explanation
B) 300
Show Explanation
C) 600
Show Explanation
D) 450
Show Explanation

Newton’s first law falsified:

Federal Mock 4
Physics
Forces and Motion
A) Theory of relativity
Show Explanation
B) Aristotle’s theory
Show Explanation
C) Einstein’s theory
Show Explanation
D) Maxwell’s theory
Show Explanation

In the direction indicated by an electric field line:

Federal Mock 4
Physics
Electrostatics
A) The electric field strength must increase
Show Explanation
B) The electric field strength must decrease
Show Explanation
C) The potential must decrease
Show Explanation

Dark plastic handlers often used on kitchen utensils because:

Federal Mock 4
Physics
Nuclear Physics
Biological Effects and Uses of Radiation
A) The balc material is good in radiation
Show Explanation
B) The plastic is good insulator
Show Explanation
C) The plastic is a good conductor
Show Explanation
D) The plastic soften gradually with excessive heat
Show Explanation

A solenoid is cut into two halves. Magnetic induction due to same current in each half will be:

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
Faradays and Lenz Law and Induced EMF
A) Half of the original
Show Explanation
B) Double of the original
Show Explanation
C) Same as original
Show Explanation
D) Four times of the original
Show Explanation

What happens to the pressure of a sample of helium gas if the temperature is increased from 200 K to 800 K with no change volume?

Federal Mock 4
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
A) Pressure increases by a factor of 4
Show Explanation
B) Pressure decreases by a factor of 4
Show Explanation
C) Pressure decreases by a factor of 2
Show Explanation
D) Pressure increases by a factor of 2
Show Explanation

Astronomers calculate the speed of distant stars moving away from us using:

Federal Mock 4
Physics
Wave Motion and Sound
A) Beats
Show Explanation
B) Interference
Show Explanation
C) Superposition principle
Show Explanation
D) Doppler effect
Show Explanation

Magnetic force on a charged particle is:

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
Force on a Moving Charge in a Magnetic Field
A) QvBl
Show Explanation
B) None of these
Show Explanation
C) QvB cosθ
Show Explanation
D) QvB sinθ
Show Explanation

Which of the following is a unit of impulse?

Federal Mock 4
Physics
Forces and Motion
A) Nm/s
Show Explanation
B) Kgm/s
Show Explanation
C) N/s
Show Explanation
D) N/m
Show Explanation

Which row describes the oscillations of two moving particles in a stationary wave that are separated by a distance of half a wavelength?

Federal Mock 4
Physics
Wave Motion and Sound
A) A
Show Explanation
B) B
Show Explanation
C) C
Show Explanation
D) D
Show Explanation

If the engine power is 3.3kW and it is 60% efficient, how much water will it pump in 5s from a height of 10m?

Federal Mock 4
Physics
Work, Power & Energy
A) 60kg
Show Explanation
B) 100kg
Show Explanation
C) 75kg
Show Explanation
D) 80kg
Show Explanation

A metallic circular ring is suspended by a string and is kept in a vertical plane. When a magnet is approached towards the ring, then it will:

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
Faradays and Lenz Law and Induced EMF
A) Remain stationary
Show Explanation
B) Get displaced away from the magnet
Show Explanation
C) Get displaced towards the magnet
Show Explanation
D) Nothing can be said
Show Explanation

Newton’s third law is derived from:

Federal Mock 4
Physics
Forces and Motion
A) Newton’s first law
Show Explanation
B) Both of these
Show Explanation
C) None of these
Show Explanation
D) Newton’s second law
Show Explanation

The direction of the restoring force is always towards ____.

Federal Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) Right hand
Show Explanation
B) Upwards
Show Explanation
C) Rest or mean position
Show Explanation
D) Extreme position
Show Explanation

A particle carrying a charge of 3e, accelerates through a potential difference of 2V. The energy acquired by it is:

Federal Mock 4
Physics
Electrostatics
Electron Volt
A) 1.6 X 10-19 J
Show Explanation
B) 9.6 X 10-19 J
Show Explanation
C) 9.6 X 10-18 J
Show Explanation
D) 1.6 X 10-18 J
Show Explanation

Four wires of same material, the same cross-sectional area and the same length when connected in parallel give a resistance of 0.25 ohms. If the same four wires are connected is series the effective resistance will be?

Federal Mock 4
Physics
Current Electricity
Ohms Law
A) 1 ohm
Show Explanation
B) 2 ohm
Show Explanation
C) 3 ohm
Show Explanation
D) 4 ohm
Show Explanation

The half-life of radium is about 1600 years. Of 100 g of radium existing now, 25 g will remain unchanged after _____.

Federal Mock 4
Physics
Nuclear Physics
Radioactivity
A) 2400 years
Show Explanation
B) 3200 years
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C) 6400 years
Show Explanation
D) 4800 years
Show Explanation

A container is divided into two equal portions. One portion contains an ideal gas at pressure P and temperature T while the other portion is a perfect vacuum. If a hole is opened between the two portions

Federal Mock 4
Physics
Heat and Thermodynamics
Internal Energy
A) There will be a change in internal energy
Show Explanation
B) There will be a change in temperature
Show Explanation
C) There will be no change in internal energy
Show Explanation
D) The external pressure will increase
Show Explanation

A small and a large raindrops are falling through air

Federal Mock 4
Physics
Fluid Dynamics
A) The small drop will evaporate
Show Explanation
B) The large drop moves faster
Show Explanation
C) The small drop moves faster
Show Explanation
D) Both move with the same speed
Show Explanation

The magnetic lines of force are directed in a manner that they:

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
A) Originate at south pole and terminate at north pole
Show Explanation
B) Pass through the magnet
Show Explanation
C) Originate at north pole and terminate at south pole
Show Explanation
D) Go away from both the poles
Show Explanation

Light of wavelength 400 nm is incident continuously on a cesium ball (work function 1.9 eV). The maximum potential to which the ball will be charged is:

Federal Mock 4
Physics
Dawn of Modern Physics
Photoelectric Effect
A) 3.1 V
Show Explanation
B) 1.2 V
Show Explanation
C) Zero
Show Explanation
D) Infinite
Show Explanation

A car is moving in a circular track of radius 20m at a constant speed of 20m/sec. Find the centripetal acceleration?

Federal Mock 4
Physics
Circular Motion & Momentum
A) 20 m/s^2
Show Explanation
B) 40 m/s^2
Show Explanation
C) 30 m/s^2
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D) 10 m/s^2
Show Explanation

A particle having the charge of 20 electrons on its falls through a potential difference of 100 volts.Calculate the energy acquired by it in electron volt (eV).

Federal Mock 4
Physics
Electrostatics
Electron Volt
A) 2.0 x 10^-2 eV
Show Explanation
B) 2.0 x 10^-3 eV
Show Explanation
C) 2.0 x 10^2 eV
Show Explanation
D) 2.0 x 10^3 eV
Show Explanation

Power developed by a person on eating 100g of ice per minute is (Latent heat of ice is 80 cal/g):

Federal Mock 4
Physics
Work, Power & Energy
A) 130 W
Show Explanation
B) 560 cal/sec
Show Explanation
C) 560 J/sec
Show Explanation
D) none of these
Show Explanation

The diameter of a nucleus is:

Federal Mock 4
Physics
Nuclear Physics
Composition of Atomic Nuclei
A) 10^-12m
Show Explanation
B) 10^-20m
Show Explanation
C) 10^-10m
Show Explanation
D) 10^-15 m
Show Explanation

What is true about acceleration of an object undergoing simple harmonic motion?

Federal Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) Acceleration is minimum when velocity is maximum
Show Explanation
B) acceleration is proportional to the frequency of oscillation
Show Explanation
C) acceleration is in opposite direction to its velocity
Show Explanation
D) acceleration is minimum when potential energy is maximum
Show Explanation

A first harmonic stationary sound wave is produced in the air of the cylinder, which is half filled with water. More water is added to the cylinder, now first harmonic stationary wave is produced with a different frequency. What is the change in frequency and the nature of displacement in air at the water surface?

Federal Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) nature of displacement= antinode change in frequency= decrease
Show Explanation
B) nature of displacement= antinode change in frequency= increase
Show Explanation
C) nature of displacement= node change in frequency= increase
Show Explanation
D) nature of displacement= node change in frequency = decrease
Show Explanation

The phase angle between two points is 3 pi. The distance between these points is 15 cm. What is the wavelength of the wave?

Federal Mock 4
Physics
Wave Motion and Sound
A) 10.5
Show Explanation
B) 3cm
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C) 13cm
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D) 10cm
Show Explanation

An ambulance siren emits a sound of frequency 1800 Hz. The speed of sound in air is 330 m/s. The ambulance moves towards a stationary observer at a constant speed of 50 m/s. What is the frequency heard by the observer?

Federal Mock 4
Physics
Wave Motion and Sound
A) (1800 * 290)/ 330
Show Explanation
B) (1800 * 330) / 370
Show Explanation
C) (1800 * 330) / 280
Show Explanation
D) (1800 * 330) / 380
Show Explanation

If a wheel of radius r turns through an angle of 30°, then the distance through which any point on its rim moves is?

Federal Mock 4
Physics
Circular Motion & Momentum
A) r(π/3)
Show Explanation
B) r(π/6)
Show Explanation
C) r(π/30)
Show Explanation
D) r(π/180)
Show Explanation

The length and radius of an electric resistance of a certain wire are doubled simultaneously, then the:

Federal Mock 4
Physics
Current Electricity
Wire Wound Variable Resistors
A) Resistance will be doubled and specific resistance will be halved
Show Explanation
B) Resistance will be halved and specific resistance will remain uncharged
Show Explanation
C) Resistance will be halved and specific resistance will be doubled
Show Explanation
D) Resistance and specific resistance will both remain uncharged
Show Explanation

Angle between radius vector and centripetal acceleration is

Federal Mock 4
Physics
Circular Motion & Momentum
A) 0°
Show Explanation
B) π
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C) 2π
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D) none of these
Show Explanation

A solenoid 15 cm long has 300 turns of wire. A current of 5 A flows through it.
What is the magnitude of the magnetic field inside the solenoid?

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
Faradays and Lenz Law and Induced EMF
A) 75 x 107 T
Show Explanation
B) 60 x 10+3 T
Show Explanation
C) 4π x 10-3
Show Explanation
D) 750π x 10+3
Show Explanation

Consider two capacitors with capacitance 2yF and 4yF. With which type of connection will the 4yF capacitor have a greater amount of stored energy than the 2yF capacitor?

Federal Mock 4
Physics
Electrostatics
Capacitor
A) Series
Show Explanation
B) Parallel
Show Explanation
C) Either series or parallel
Show Explanation
D) Neither series nor parallel
Show Explanation

For static electric field

Federal Mock 4
Physics
Electrostatics
A) Vx E=0
Show Explanation
B) V.E=0
Show Explanation
C) (VxE)xE=0
Show Explanation
D) V.|E|42=0
Show Explanation

The diagram shows a small magnet hanging on a thread near the end of a solenoid carrying a steady current ‘I’. What happens to the magnet as the iron core is inserted into the solenoid?

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
Faradays and Lenz Law and Induced EMF
A) It moves towards solenoid and rotates through 180˚
Show Explanation
B) It moves towards the solenoid
Show Explanation
C) It moves away from solenoid
Show Explanation
D) It moves away from solenoid and rotates through 180˚
Show Explanation

The dual nature of light is exhibited by:

Federal Mock 4
Physics
Dawn of Modern Physics
Photoelectric Effect
A) diffraction and photoelectric effect
Show Explanation
B) diffraction and reflection
Show Explanation
C) diffraction and interference
Show Explanation
D) photoelectric effect
Show Explanation

An object is moving along a circular path of radius 4m. What will be its angular displacement if it moves 14 m on this circular path?

Federal Mock 4
Physics
Circular Motion & Momentum
A) 5.0 radians
Show Explanation
B) 3.5 radians
Show Explanation
C) 4.5 radians
Show Explanation
D) 5.5 radians
Show Explanation

The path difference for the constructive interference is:

Federal Mock 4
Physics
Wave Motion and Sound
A) (n-1) λ
Show Explanation
B) (n+1) λ
Show Explanation
C) n λ/2
Show Explanation
D) nλ.
Show Explanation

The resistivity of a wire is _____ohm-m if 0.75 A current flows through it by applying a 1.5 V potential difference. Take length and cross-section as 5m and 2.5 X 10-7 m2.

Federal Mock 4
Physics
Current Electricity
Resistivity and its Dependence upon Temperature
A) 1 X 10-7
Show Explanation
B) 2.63 x 10-8
Show Explanation
C) 19 X 10-8
Show Explanation
D) 7.85 X 10-8
Show Explanation

The necessary centripetal force to the moving around a copper track is provided by:

Federal Mock 4
Physics
Circular Motion & Momentum
A) Centrifugal force
Show Explanation
B) Gravitational force
Show Explanation
C) Coulumbs force
Show Explanation
D) Frictional force
Show Explanation

An automobile is moving forwards with uniform velocity due to the force exerted by its engine. If the force is doubled with the velocity remaining constant what happens to its total power?

Federal Mock 4
Physics
Forces and Motion
A) It is squared
Show Explanation
B) It is halved
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C) It is doubled
Show Explanation
D) It does not change
Show Explanation

The voltage that is applied across X-plates is provided by a circuit callee

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
A) Audio generator
Show Explanation
B) Time base generator
Show Explanation
C) Signal generator
Show Explanation
D) Linear generator
Show Explanation

If the number of turns of a solenoid circular coil is doubled, but the current in the coil and radius of the coil remains the same, then what will be the magnetic flux density produced by the coil?

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
Induced EMF and Induced Current
A) Magnetic flux density will be halved
Show Explanation
B) Magnetic flux density increases by different amount at different points
Show Explanation
C) Magnetic flux density remains unchanged
Show Explanation
D) Magnetic flux density will be doubled
Show Explanation

Alpha, Beta and Gamma radiations are emitted from a radioactive substance:

Federal Mock 4
Physics
Nuclear Physics
Radioactivity
A) When it is heated
Show Explanation
B) When it is subjected to high pressure
Show Explanation
C) When it interacts with another particle
Show Explanation
D) Spontaneously
Show Explanation

If K.E of free electron is doubled its de broglie wavelength becomes?

Federal Mock 4
Physics
Dawn of Modern Physics
A) 1/√8
Show Explanation
B) √2
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C) 1/√2
Show Explanation
D) 2
Show Explanation

The magnetic field, B, produced in a solenoid depends on:

Federal Mock 4
Physics
Magnetism and Electromagnetic Induction
Force on a Current Carrying Conductor in a Uniform Magnetic Field
A) its length
Show Explanation
B) its length and current in it
Show Explanation
C) Its length and number of turns in it
Show Explanation
D) Its length, number of turns and current in it
Show Explanation

A force of 20 N acts on a body through a distance of 10m. What must be the angle between force and displacement such that work comes out to be 100 J?

Federal Mock 4
Physics
Work, Power & Energy
A) 90
Show Explanation
B) 0
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C) 30
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D) 60
Show Explanation

Alpha rays are nuclear radiations. They are in fact same as the __________ nuclei.

Federal Mock 4
Physics
Nuclear Physics
Radioactivity
A) Hydrogen
Show Explanation
B) Deuterium
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C) Tritium
Show Explanation
D) Helium
Show Explanation

Instantaneous acceleration of system executing SHM is directed:

Federal Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) Towards the mean position
Show Explanation
B) Away from the mean position
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C) Perpendicular to the mean position upward
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D) Perpendicular to the mean position downward
Show Explanation

Select the option which fits appropriately in the blank:

I am in London this Summer, I ___________ English.

Federal Mock 4
English
Fill in the blank
A) Learn
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B) Learns
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C) Am learning
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D) Learning
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Select the option which fits appropriately in the blank:

A really sophisticated person would never be _______ enough, to think that he is always right.

Federal Mock 4
English
Fill in the blank
A) Reverent
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B) Naive
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C) Articulate
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D) Humble
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Choose the correct spelling of the word:

Federal Mock 4
English
Key Vocabulary
A) Annehilate
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B) Anihilate
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C) Annihilate
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D) Anehilate
Show Explanation

Each sentence below has a blank indicating that something has been omitted. Choose the word that best fits in with the meaning of the sentence as a whole.

The provost was utterly _______ about having the students keep their books tidily in their lockers, yet her desk was very ________.

Federal Mock 4
English
Tenses and Sentence Structure
A) Apathetic …comfortable
Show Explanation
B) Bewildered … bizarre
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C) Determined …disorderly
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D) Considerate…modern
Show Explanation

Jack is six years old, but he ________ French and Spanish.

Federal Mock 4
English
Grammar and Punctuation
A) Speaking
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B) Is speaking
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C) Speaks
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D) Speak
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Which one is grammatically correct? Read carefully.

Federal Mock 4
English
Key Vocabulary
A) Both are correct
Show Explanation
B) Speak up! I can’t hear you because your dog is making too much noise.
Show Explanation
C) Both are wrong
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D) Speak up! I can’t hear you because your dog is making much too noise.
Show Explanation

Select the option which fits appropriately in the blank:

My father often ______ here.

Federal Mock 4
English
Fill in the blank
A) Come
Show Explanation
B) Came
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C) Comes
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D) Coming
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In each of the following questions, four alternative sentences are given.

Choose the CORRECT option.

Federal Mock 4
English
Identify errors in sentence
A) He chastised the team from their lack of commitment.
Show Explanation
B) He chastised the team to their lack of commitment.
Show Explanation
C) He chastised the team of their lack of commitment.
Show Explanation
D) He chastised the team for their lack of commitment.
Show Explanation

Select the option which fits appropriately in the blank:

Everyone __________ done his or her homework.

Federal Mock 4
English
Fill in the blank
A) Has
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B) Have
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C) Had
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D) Non
Show Explanation

Identify the word or phrase that needs to be changed for the sentence to be correct.

You cannot leave now. The lions and tigers will appear in a minute.

Federal Mock 4
English
Identify errors in sentence
A) You
Show Explanation
B) The lions
Show Explanation
C) Tigers
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D) Appear
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E) No error
Show Explanation

Select the most suitable synonym for the given word:
JUXTAPOSE:

Federal Mock 4
English
Key Vocabulary
A) Justify
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B) Compare
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C) Expos
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D) Jettison
Show Explanation

In the following questions, sentences are given with blanks to be filled in with an appropriate word. Four alternatives are suggested for each question. Choose the correct alternative, out of the four as your answer.

Ravens appear to behave ______, actively helping one another to find food.

Federal Mock 4
English
Fill in the blank
A) mysteriously
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B) warily
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C) aggressively
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D) defensively
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Choose the related word for Rat on the analogy of Elephant : Stride.

Federal Mock 4
English
Key Vocabulary
A) Scamper
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B) Loiter
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C) Whimper
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D) Gallop
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Select the most suitable synonym for the given word:
FECKLESS:

Federal Mock 4
English
Key Vocabulary
A) Useless
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B) Careless

Show Explanation
C) Dauntless
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D) Fearless
Show Explanation

Choose the correct sentence from the following options:

Federal Mock 4
English
Tenses and Sentence Structure
A) If a person believes that wearing some kind of charm will prevent him from having bad luck, he will wear it.
Show Explanation
B) If a person believed that wearing some kind of charm will prevent him from having bad luck, he will wear it.
Show Explanation
C) If a person believes that wearing some kind of a charm will prevent him to have bad luck. He will wear it.
Show Explanation
D) If a person believed that wearing some kind of charm will prevent him from having bad luck, he would wear it.
Show Explanation

Each sentence below has a blank indicating that something has been omitted. Choose the word that best fits in with the meaning of the sentence as a whole.

The air in a room that contains several houseplants can be more ______ oxygen than in a room that contains no plants.

Federal Mock 4
English
Tenses and Sentence Structure
A) Complicated by
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B) Exhausted with
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C) Obscured by
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D) Saturated with
Show Explanation

A person who leaves his country and settles in another country is called:

Federal Mock 4
English
Key Vocabulary
A) Emigrant
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B) Immigrant
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C) Migrant
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D) Aborigine
Show Explanation

Identify the word or phrase that needs to be changed for the sentence to be correct:

The stories that she makes out for her children ought to be written down and published.

Federal Mock 4
English
Identify errors in sentence
A) That
Show Explanation
B) Makes out
Show Explanation
C) Ought to
Show Explanation
D) Written down
Show Explanation

Gigantism in human beings is caused due to over secretion of:

Federal Mock 4
Biology
Coordination and Control
Endocrine System and its Hormones
A) Thyrotropin
Show Explanation
B) Corticotropin
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C) Somatotropin
Show Explanation
D) Prolactin
Show Explanation

In the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree.

Federal Mock 4
Biology
Variation and Genetics
Inherited Diseases
A) Autosomal recessive
Show Explanation
B) X-­linked dominant
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C) Autosomal dominant
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D) X-­linked recessive
Show Explanation

The absorption and use of calcium are regulated by

Federal Mock 4
Biology
Coordination and Control
Endocrine System and its Hormones
A) Parathormone
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B) Adrenaline
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C) Thyroxin
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D) Thiamin
Show Explanation
E) Prolactin
Show Explanation

Which of the following structures provides greater pathogenicity to the bacteria?

Federal Mock 4
Biology
Kingdom Prokaryote
Importance and Control of bacteria
A) Slime
Show Explanation
B) Cell Wall
Show Explanation
C) Cell Membrane
Show Explanation
D) Capsule
Show Explanatio

First infectious disease against which effective method of prevention developed was a _______:

Federal Mock 4
Biology
Variety of Life
A) Bacterial disease
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B) Viral disease
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C) Protozoan disease
Show Explanation
D) Viroid disease
Show Explanation

___________ accepts hydrogen from malate

Federal Mock 4
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) COQ
Show Explanation
B) FMN
Show Explanation
C) FAD
Show Explanation
D) NAD
Show Explanation

The mechanism that causes a gene to move from one linkage group to another is called:

Federal Mock 4
Biology
Variation and Genetics
Gene Linkage and Crossing Over
A) Inversion
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B) Duplication
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C) Translocation
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D) Crossing­ over
Show Explanation

At which site does digestion of starches begin?

Federal Mock 4
Biology
Nutrition
Digestion and Absorption
A) 3
Show Explanation
B) 7
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C) 8
Show Explanation
D) 12
Show Explanation

A non­-proteinaceous enzyme is:

Federal Mock 4
Biology
A) Lysozyme
Show Explanation
B) Ribozyme
Show Explanation
C) Ligase
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D) Deoxyribonuclease
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Which property of water helps to maintain the integrity of lipid-containing membranes?

Federal Mock 4
Biology
Cell Structure and Function
Plasma Membrane
A) Specific Heat Capacity
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B) Hydrogen Bonding
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C) Cohesion and Adhesion
Show Explanation
D) Hydrophobic exclusion
Show Explanation

Enzymes that are functioning within the cell are called:

Federal Mock 4
Chemistry
Chemistry of Life
Enzymes
A) Endoenzymes
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B) Exoenzymes
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C) Holoenzymes
Show Explanation
D) Both A & C
Show Explanation

Bacteria that live in intestine and produce vitamin K belong to?

Federal Mock 4
Biology
Kingdom Prokaryote
Importance and Control of bacteria
A) Vibrio
Show Explanation
B) Cocci
Show Explanation
C) Spirilla
Show Explanation
D) Bacilli
Show Explanation

Some enzymes require the presence of a non protein molecule to behave catalytically. An enzyme devoid of this molecule is called a(n):

Federal Mock 4
Biology
A) Holoenzyme
Show Explanation
B) Apoenzyme
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C) Coenzyme
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D) Zymoenzyme
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The diencephalon comprises of:

Federal Mock 4
Biology
Coordination and Control
Central Nervous System
A) Pons and medulla
Show Explanation
B) Thalamus and limbic system
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C) Pons and medulla
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D) Hypothalamus and limbic system
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All of the following statements about arteries are true except:

Federal Mock 4
Biology
Transport
A) They are thick-walled
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B) They pulsate
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C) They contain much elastic fiber tissue
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D) They carry blood away from the heart
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E) They contain valves
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Which of the following most appropriately describes haemophilia?

Federal Mock 4
Biology
Variation and Genetics
Inherited Diseases
A) Chromosomal disorder
Show Explanation
B) Dominant gene disorder
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C) Recessive gene disorder
Show Explanation
D) X-­linked recessive gene disorder
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Which of the following is correct for the given structure?

Federal Mock 4
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) These are small structures which work like oars
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B) It is covered with plasma membrane
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C) Its core is called axoneme
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D) All of the above
Show Explanation

Which one forms the raw material for coenzymes:

Federal Mock 4
Biology
A) Vitamins
Show Explanation
B) Carbohydrates
Show Explanation
C) Lipids
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D) Proteins
Show Explanation

Lack of relaxation between successive stimuli in sustained muscle contraction is known as:

Federal Mock 4
Biology
Support and Movement
Disorders of Skeleton
A) Tetany
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B) Tonus
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C) Spasm
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D) Fatigue
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An example of competitive inhibition of an enzyme is the inhibition of;

Federal Mock 4
Biology
A) Succinic dehydrogenase by malonic acid
Show Explanation
B) Cytochrome oxidase by cyanide
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C) Hexokinase by glucose
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D) Carbonic anhydrase by carbon dioxide
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The shape of gray matter is:

Federal Mock 4
Biology
Coordination and Control
Central Nervous System
A) Spherical
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B) Butterfly
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C) Mosquito
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D) Rectangular
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Lipid emulsification is done by:

Federal Mock 4
Biology
Biological Molecules
Lipids
A) Pancreatic juice
Show Explanation
B) Intestinal juice
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C) All of these
Show Explanation
D) Bile
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A sponge of Antarctica which is more than a meter tall is known as?

Federal Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Euplectella
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B) Spongilla
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C) Leucosolenia
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D) Scolymastra joubini
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A combination of alpha interferon and ribavirin is used for the treatment of hepatitis:

Federal Mock 4
Biology
Bio-diversity | Variety of Life
A) Hepatitis B
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B) Hepatitis A
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C) Hepatitis D
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D) Hepatitis C
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Which statement correctly describes the alimentary canal of hydra?

Federal Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) The alimentary canal is formed from the endodermal cells
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B) The alimentary canal has a single opening.
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C) The alimentary canal is saclike.
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D) All of the above.
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A woman with normal colour vision, whose father was red green colour blind, married a red green colour blind man. What is the probability of her born child being red green colour blind?

Federal Mock 4
Biology
Variation and Genetics
Inherited Diseases
A) 1.0
Show Explanation
B) 0.75
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C) 0.50
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D) 0.25
Show Explanation

A structure established between the uterine and foetal tissues for the exchange of oxygen, carbon dioxide, waste, nutrients and other materials is:

Federal Mock 4
Biology
Reproduction
Reproduction in Females
A) Amnion
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B) Placenta
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C) Endometrium
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D) Uterus
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The rate of breathing is controlled by the:

Federal Mock 4
Biology
Gaseous Exchange
Respiratory System of Man
A) Lungs
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B) Cerebellum
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C) Pons
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D) Medulla oblongata
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The optimum pH for the functioning of enzyme pepsin is:

Federal Mock 4
Biology
A) 2
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B) 3
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C) 4
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D) 5
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In which type of cells, cell wall is not present?

Federal Mock 4
Biology
Cell Structure and Function
Cell Wall
A) Plant cells
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B) Fungal cells
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C) Bacterial cells
Show Explanation
D) Liver cells
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All of the following coelenterates show alternation of generation except?

Federal Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Hydra
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B) Obelia
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C) Aurellia
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D) All of these options are correct
Show Explanation

Venous blood en route from the kidneys to the heart must pass through the:

Federal Mock 4
Biology
Transport
A) Iliac vein
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B) Inferior vena cava
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C) Liver
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D) Hepatic vein
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Irreversible modifications require the synthesis of which of the following?

Federal Mock 4
Biology
A) Enzymes
Show Explanation
B) Carbohydrates
Show Explanation
C) Vitamins
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D) Proteins
Show Explanation

The notochord is

Federal Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Present in adult chordates
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B) Present in all echinoderms
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C) Present in chordates during embryological developents
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D) Always a vestigial organ in chordates
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Tay Sach’s disease is caused by absence of enzyme required to breakdown ____________.

Federal Mock 4
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Lipids
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B) Glycogen
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C) Glucose
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D) Proteins
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Hypothalamus initiates the release of hormones, by their releasing factors, while ________ is directly released by it.

Federal Mock 4
Biology
Coordination and Control
Endocrine System and its Hormones
A) TSH
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B) ACTH
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C) FSH
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D) Dopamine
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Which of the following is the least likely to be involved in stabilizing the three­ dimensional folding of most proteins?

Federal Mock 4
Biology
Biological Molecules
Proteins
A) Hydrogen bonds
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B) Electrostatic interaction
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C) Hydrophobic interaction
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D) Ester bonds
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The rate of photosynthesis and respiration may equal one another at what time?

Federal Mock 4
Biology
Bioenergetics
Introduction to Photosynthesis
A) Dawn
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B) Noon
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C) Dusk
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D) Dawn and dusk
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The brain is protected by:

Federal Mock 4
Biology
Coordination and Control
Central Nervous System
A) sacrum
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B) Cranium
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C) humerus
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D) scapula
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The animals of division Radiata are which of the following?

Federal Mock 4
Biology
Kingdom Animalia
Grade Radiata & Grade Bilateria
A) triploblastic
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B) diploblastic
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C) radioblast
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D) all of these
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Detoxification of drugs is the function of _____ in a cell.

Federal Mock 4
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) R.E.R
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B) S.E.R
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C) Liver cells
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D) Lysosome
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Suggest which among the following is not a function attributed to endoplasmic reticulum?

Federal Mock 4
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Detoxification of poisons and drugs
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B) Digestion/egestion of foreign materials outside the cell
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C) Manufacture of fat and lipid molecules
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D) Biogenesis of membrane proteins
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Chlorophyll molecule resemble the haem group of hemoglobin, the main difference between these two molecule is that chlorophyll has ____ ion.

Federal Mock 4
Biology
Bioenergetics
Chloroplasts
A) Fe2+
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B) Mg2+
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C) Mn2+
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D) Ca2+
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A disease caused by an autosomal primary non-disjunction is:

Federal Mock 4
Biology
Variation and Genetics
Inherited Diseases
A) Klinefelter’s syndrome
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B) Turner’s syndrome
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C) Sickle cell anaemia
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D) Down’s syndrome
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Premature birth or miscarriage is usually caused by the disturbance in secretion of which of the following hormone?

Federal Mock 4
Biology
Reproduction
Disorders of the Reproductive System
A) Estrogen
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B) Progesterone
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C) Lactogen
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D) Luteinizing Hormone (LH)
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In which of the following is the organic compound COOH (carboxyl) group found?

(I) Carbohydrate

(II) Lipid

(III) Protein

Federal Mock 4
Biology
Biological Molecules
Introduction to Biological Molecules
A) I only
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B) II only
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C) I and II only
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D) II and III only
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A metal cofactor which is used in synthesis of glycolysis is?

Federal Mock 4
Biology
A) Fe+3
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B) Mn+2
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C) Co+2
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D) Mg+2
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Which of the following animals can survive without drinking water?

Federal Mock 4
Biology
Nutrition
Heterotrophic Nutrition
A) Kangaroo rat
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B) Pig
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C) Kangaroo
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D) Camel
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The area on the left hemisphere related to speech is called?

Federal Mock 4
Biology
Coordination and Control
Central Nervous System
A) Amygdala
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B) Broca’s area
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C) Hypothalamus
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D) Occipital lobe
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The diagram is taken from an electron of a cell, name the organelle labeled D:

Federal Mock 3
Biology
Cell Structure and Function
Compare the structure of a typical plant and animal cell
A) Nucleus
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B) Lysosomes
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C) Golgi complex
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D) Mitochondria
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Holoenzyme is?

Federal Mock 4
Biology
A) Protein moiety of enzyme
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B) Non-protein moiety of enzyme
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C) Complete enzyme
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D) Inactive enzyme
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HIV is also known as:

Federal Mock 4
Biology
Bio-diversity | Variety of Life
A) AIDS
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B) HAV
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C) HTLV
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D) HBV
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If lipopolysaccharides did not appear in the wall of bacteria on staining then it will be known as ________.

Federal Mock 4
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Gram negative
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B) Gram positive
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C) Capsule
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D) Both Gram positive & negative
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The Porifera are pore – bearing animals, commonly called:

Federal Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Corals
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B) Sponges
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C) Hydras
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D) Anemones
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The sex pili is formed in which of the following processes?

Federal Mock 4
Biology
Kingdom Prokaryote
Growth and Reproduction in Bacteria
A) Sexual reproduction
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B) Binary fission
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C) Mitosis
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D) Conjugation
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Vaccines for all of these have been developed EXCEPT:

Federal Mock 4
Biology
Bio-diversity | Variety of Life
A) Polio
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B) Mumps
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C) Measles
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D) Cancer
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The primary electron acceptor in cyclic photophosphorylation is:

Federal Mock 4
Biology
Bioenergetics
Light Dependent Mechanism of Photosynthesis
A) Carbon dioxide
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B) A protein that contains iron and sulphur
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C) NADP
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D) FAD
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Which of the following is not the type of cells of gastric gland?

Federal Mock 4
Biology
Nutrition
Digestion and Absorption
A) Zymogenic
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B) Parietal
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C) Sinusoidal
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D) Mucous neck
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Which of the following is an exception to cell theory?:

Federal Mock 4
Biology
Cell Structure and Function
Introduction to Cell and it’s theory
A) Bacteria
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B) Viruses
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C) Protists
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D) Protozoans
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Nutrition refers to the processes involved in:

Federal Mock 4
Biology
Nutrition
Digestion and Absorption
A) Taking in of food
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B) Utilization of food elements
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C) Growth, repair, and maintenance
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D) All of the above options are correct
Show Explanation

The number of spinal nerves along the spinal cord is:

Federal Mock 4
Biology
Coordination and Control
Central Nervous System
A) 16 pairs
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B) 20 pairs
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C) 31 pairs
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D) 33 pairs
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For respiratory metabolism, a bacterial cell membrane contains:

Federal Mock 4
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Proteins
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B) Lipids
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C) Enzymes
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D) Chemicals
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The joints that allow movement in two directions are called:

Federal Mock 4
Biology
Support and Movement
Types of Joints
A) Ball and Socket joint
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B) Hinge joint
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C) Cartilaginous joint
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D) Fibrous joint
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Which type of chlorophyll is found in all types of algae?

Federal Mock 4
Biology
Bioenergetics
Photosynthetic pigments
A) Chlorophyll a
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B) Chlorophyll b
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C) Chlorophyll c
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D) Chlorophyll d
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Which of the following is true in case of induced fit model?

Federal Mock 4
Biology
A) The substrate changes its shape slightly.
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B) The enzyme changes its shape slightly.
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C) None of them changes shape.
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D) Both changes shape.
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Which of the following is the first group of invertebrates which have developed a closed circulatory system?

Federal Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Nematodes
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B) Arthropods
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C) Annelids
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D) Molluscs
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Oxygen, released into the atmosphere, comes from:

Federal Mock 4
Biology
Bioenergetics
Introduction to Photosynthesis
A) CO2
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B) H2O
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C) C6H12O6
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D) CO2 and H2O
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The oxygen and carbon dioxide crosses the plasma membrane by the process of:

Federal Mock 4
Biology
Cell Structure and Function
Plasma Membrane
A) Active diffusion
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B) Facilitated diffusion
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C) Passive diffusion
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D) Random diffusion
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Which of the following statements about the reaction given below are correct.

IO3-(aq) + 2I-(aq) + 6H+(aq) + 6Cl-(aq) -> 3ICl2-(aq) + 3H2O(l)

Federal Mock 4
Chemistry
Electrochemistry
Redox Equations
A) The oxidation number of iodine in the iodate ion,IO3-(aq), changes from +5 to +1
Show Explanation
B) The oxidation number of iodine in the iodide ion I-, changes from -1 to +2
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C) The oxidation number of chlorine in the iodide ion I- , changes from -1 to -2
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D) Iodate ions are oxidized
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Which carbon of amino acids bond to nitrogen of another in peptide linkage

Federal Mock 4
Chemistry
Chemistry of Life
Proteins
A) α-Carbon
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B) ẞ-Carbon
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C) Side chain carbon
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D) Carbonyl carbon
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Buffer solutions resist change in their ___________ ?

Federal Mock 4
Chemistry
Chemical Equilibrium
A) Temperature
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B) Solubility
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C) Volatility
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D) pH
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Which is not a meta directing group:

Federal Mock 4
Chemistry
Hydrocarbons
Reactions of Benzene
A) -NO2
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B) -COOH
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C) -NH2
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D) -COR
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FIX THIS:Chlorine in Vinyl chloride is not very reactive because

Federal Mock 4
Chemistry
Hydrocarbons
Alkynes
A) C−Cl bond develops partial double bonds
Show Explanation
B) Of resonance
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C) Sp2 hybridized carbon has more acidic character than sp3 hybridized carbon
Show Explanation
D) All of the above
Show Explanation

A catalyst is a substance which:

Federal Mock 4
Chemistry
Reaction Kinetics
Catalysis
A) Stops the reaction
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B) Decreases the rate of reaction
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C) Alters the rate of reaction
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D) Increases the rate of reaction
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Metallic character depends on ________ ?

Federal Mock 4
Chemistry
s and p Block Elements
Introduction to s and p Block Elements
A) Electron Affinity
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B) Ionization energy
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C) Electronegativity
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D) All of these
Show Explanation

Beryllium(Be) shows the diagonal relationship with:

Federal Mock 4
Chemistry
s and p Block Elements
Introduction to s and p Block Elements
A) Al
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B) B
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C) Mg
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D) Na
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1 liter of a gas weighs 2 g at 300 K and 1 atm pressure. If the pressure is made 0.75 atm, at which of the following temperatures will 1 L of the same gas weigh 1 g?

Federal Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Gas Laws and General Gas Equation
A) 450 K
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B) 800 K
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C) 600 K
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D) 900 K
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For a given mass of gas, if the pressure is reduced to half and its temperature is doubled, then volume V will become?

Federal Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Gas Laws and General Gas Equation
A) 4V
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B) 2V2
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C) V/4
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D) 8V
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When the number of moles of reactants and products are equal in reversible reactions which parameter would not affect at equilibrium?

Federal Mock 4
Chemistry
Chemical Equilibrium
Factors Affecting Equilibria
A) Temperature
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B) Pressure
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C) Volume
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D) Catalyst
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Which class of halogenoalkane can react with alkali by an SN2 mechanism?

Federal Mock 4
Chemistry
Alkyl Halides and Amines
A) Primary and secondary
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B) Secondary and tertiary
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C) Primary and tertiary
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D) Primary, secondary and tertiary
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A water soluble compound of molecular formula C3H6O gives yellow crystalline solid on heating with I and Na2CO3 , the compound is

Federal Mock 4
Chemistry
Hydrocarbons
A) CH3CH2 CHO
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B) CH2 OCH = CH2
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C) CH3 COCH3
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D) CH2 =CHCH2 OH
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The shape of CO2 molecule is similar to:

Federal Mock 4
Chemistry
Chemical Bonding
Bond Energy and Bond Length
A) H2S
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B) SO2
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C) SnCl2
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D) BeF2
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In addition to water, which of the following could be found during the incomplete combustion of a hydrocarbon?

Federal Mock 4
Chemistry
Hydrocarbons
A) Carbon, carbon monoxide and hydrogen
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B) Carbon and oxygen
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C) Carbon monoxide and hydrogen
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D) Carbon and carbon monoxide
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As compared to K, Na has.

Federal Mock 4
Chemistry
s and p Block Elements
Introduction to s and p Block Elements
A) Larger atomic radius
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B) Higher ionization potential
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C) Lower melting point
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D) Lower electronegativity
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The relation between first and second ionization potentials of a given atom is:

Federal Mock 4
Chemistry
Chemical Bonding
Ionization Energy
A) I1 I2
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C) I1= I2
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D) None of these options
Show Explanation

Which of the following processes is endothermic?

Federal Mock 4
Chemistry
Thermochemistry
Standard States and Enthalpy Changes
A) The condensation of steam
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B) The electrolysis of water
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C) The freezing of the water
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D) ??(?)+ 2?2O (I) ??2 (aq)+ ?2 (g)
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Which reagent gives a colorless homogeneous solution when added tp phenol?

Federal Mock 4
Chemistry
Alcohol, Phenols, and Ethers
A) Aqueous bromine
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B) Aqueous sodium carbonate
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C) Aqueous sodium hydroxide
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D) Aqueous sodium hydroxide and benzoyl chloride
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The smallest part of a crystal lattice showing all the properties of a crystal is called a ___.

Federal Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Crystal Lattice and Lattice Energy
A) Crystallite
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B) Unit cell
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C) Unit crystal
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D) Monomer
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The RMS speed at NTP of a gas can be calculated from the expression:

Federal Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Kinetic Molecular Theory Of Gases
A) Option A
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B) Option B
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C) Option C
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D) Option D
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E) Option A, B and C
Show Explanation

A crystal system having all sides (a, b and c) unequal and anglesα = β = γ= 90 is:

Federal Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Crystal Lattice and Lattice Energy
A) Cubic
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B) Rhombohedral
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C) Orthorhombic
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D) Hexagonal
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Which of the following method is used to prepare acetic acid?

Federal Mock 4
Chemistry
Carboxylic Acids and its Derivatives
A) Distillation
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B) Fermentation
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C) Dehydration
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D) Ozonolysis
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At equilibrium, which of the following reactions is not affected by pressure?

Federal Mock 4
Chemistry
Chemical Equilibrium
State of Chemical Equilibrium
A) ½ N2(g) + ½ O2 (g) ⇌ NO(g)
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B) PCl5(g) ⇌ PCl3(g) + Cl2(g)
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C) 2NO2 (g) ⇌ N2O4(g)
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D) SO2Cl2(g) ⇌ SO2(g) + Cl2(g)
Show Explanation

FIX THIS:One of the isomers of C6 H12 (A) has chiral carbon but on hydrogenation it losses is chirality. A is

Federal Mock 4
Chemistry
Fundamental Principles of Organic Chemistry
A) 2- methyl -2- pentene
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B) 2,3-Dimethyl -2-butene
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C) 3-methyl-1-pentene
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D) 3,3 Di methyl-1- butane
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Which of the following represents the equation for the reaction between ethane and chlorine in the presence of UV radiation?

Federal Mock 4
Chemistry
Hydrocarbons
Alkanes and Paraffins
A) C2H4 + Cl2 -> C2H2Cl2 + H2
Show Explanation
B) C2H4 + Cl2 -> C2H3Cl + HCl
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C) C2H4 + Cl2 -> 2CH3Cl
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D) C2H4 + O2 -> 2CH2Cl + 2HCl
Show Explanation

How many atoms of carbon are present in 18 g of glucose, ?6 ?12 ?6?

Federal Mock 4
Chemistry
Introduction to Fundamental Concepts of Chemistry
A) 6.0 x 1022
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B) 3.6 x 1023
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C) 6.0 x 1023
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D) 3.6 x 1024
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The value of surface tension of isopropyl alcohol is:

Federal Mock 4
Chemistry
Alcohol, Phenols, and Ethers
A) Less than water
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B) Less than ethylene glycol
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C) Less than methyl alcohol
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D) Same as ethyl alcohol
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When N2+ is form N2 bond-order ……… and when O2+ is formed from O2 bond-order.

Federal Mock 4
Chemistry
Chemical Bonding
Bond Energy and Bond Length
A) Increases increases
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B) Decreases decreases
Show Explanation
C) Increases decreases
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D) Decrease increase
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In an Irreversible reaction the tendency of it to go in reverse direction is

Federal Mock 4
Chemistry
Chemical Equilibrium
Reversible and Irreversible Reactions
A) High
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B) Low
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C) Negligible
Show Explanation
D) None of these
Show Explanation

Which class of the compounds is represented by the type formula ROR’?

Federal Mock 4
Chemistry
Aldehydes and Ketones
Introduction to Aldehydes and Ketones
A) Esters
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B) Ethers
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C) Aldehydes
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D) Ketones
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Which one of the following organic compound has the least carbon – carbon bond length?

Federal Mock 4
Chemistry
Chemical Bonding
Bond Energy and Bond Length
A) Ethene
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B) Ethane
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C) Ethyne
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D) Methane
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One Calorie is equivalent to:

Federal Mock 4
Chemistry
Thermochemistry
Heat Capacity and Calorimetry
A) 0.4184J
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B) 41.84 J
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C) 4.184 J
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D) 418.4 J
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