Light can be polarized by:

reflection
double refraction
scattering of light
NTS 2017
Physics
Optics, Nature of Light and Optical Instruments
Polarization of Light
Elimination Tool:

A) I only
B) II only
C) III only
D) I and II only
E) I, II and III

Which pair includes a vector quantity and a scalar quantity respectively?

NTS 2017
Physics
Scalars and Vectors
Basic Concepts of Vectors
Elimination Tool:

A) Power, speed
B) Work, potential energy
C) Displacement, acceleration
D) Force, kinetic energy

A _____ is a positively charged particle with properties similar to the α-particle. Its mass is one fourth and charge is one half of that of an α-particle. It is smaller in size and carries less energy at the same velocity.

NTS 2017
Physics
Nuclear Physics
Radioactivity
Elimination Tool:

A) Beta particle
B) Gamma ray
C) Neutron
D) Proton

When describing the isotopes of the same element, the most accurate statement is that they have:

NTS 2017
Physics
Nuclear Physics
Elimination Tool:

A) the same spin
B) the same atomic mass but different atomic numbers
C) the same atomic number but different atomic masses
D) the same chemical properties and therefore can not be separated
E) a coexistence limit, that is, no element can have more than three isotopes

Two springs fixed at one end are stretched by 5 cm and 10 cm respectively when masses 0.5 kg and 1 kg are suspended at their lower ends. When displaced slightly from their mean positions and released, they will oscillate with time periods in the ratio:

NTS 2017
Physics
Oscillations and Simple Harmonic Motion
Horizontal Mass Spring System
Elimination Tool:

A) 1 : √2
B) 1 : 2
C) √2 : 1
D) 2 : 1
E) 2 : √2

An object with constant mass rests on a horizontal surface whose coefficient of friction is 0.2. If a horizontal force F is applied to the object, what will be the effect(s) on the object?

I. It may move with constant speed in the direction of F once it has been set in motion.

II. It may remain at rest.

III. It may accelerate.

IV. It may move with constant speed in a direction opposite

NTS 2017
Physics
Forces and Motion
Displacement, Velocity and Acceleration
Elimination Tool:

A) I, II and III only
B) I and III only
C) II and IV only
D) IV only
E) III only

Nucleus with an excess of neutrons may decay radioactivity with the emission of:

NTS 2017
Physics
Nuclear Physics
Radioactivity
Elimination Tool:

A) a neutron
B) a proton
C) an electron
D) a positron

Four particles independently move at the same speed in a direction perpendicular to the same magnetic field. Which particle is deflected the most?

NTS 2017
Physics
Magnetism and Electromagnetic Induction
Determination of e/m of an Electron
Elimination Tool:

A) a copper ion
B) a helium nucleus
C) an electron
D) a proton

In nuclear reactions, we have the conservation of:

NTS 2017
Physics
Nuclear Physics
Composition of Atomic Nuclei
Elimination Tool:

A) Mass Only
B) Energy Only
C) Momentum Only
D) Mass-Energy and Momentum

In an experiment, an object was placed on the principal axis of a convex lens 25 centimetres away from the lens. A real image 4 times the size of the object was obtained. The focal length of the lens is:

NTS 2017
Physics
Optics, Nature of Light and Optical Instruments
Magnifying and Resolving Power of Optical Instruments
Elimination Tool:

A) 20 cm
B) 25 cm
C) 33 cm
D) 50 cm
E) 100 cm

The time of open vibration of a simple pendulum may be decreased by:

NTS 2017
Physics
Oscillations and Simple Harmonic Motion
Simple Pendulum
Elimination Tool:

A) Increasing the length of the pendulum
B) Decreasing the length of the pendulum
C) Using a heavier bob
D) Using a lighter bob

______ is defined as the sensation that sound produces in the ear of a listener and is clearly related to the frequency of sound. Frequency and ______ are both measured in Hertz (Hz). Thus greater the frequency the greater the _____ and lower the frequency lower the _______.

NTS 2017
Physics
Wave Motion and Sound
Periodic Waves
Elimination Tool:

A) Quality … Pitch … Loudness … Pitch
B) Pitch … Pitch … Pitch … Pitch
C) Loudness … Quality … Pitch … Quality
D) Quality … Quality … Quality … Quality
E) Loudness … Loudness … Loudness … Loudness

Which unit expresses work per unit charge?

NTS 2017
Physics
Work, Power & Energy
Power and Energy
Elimination Tool:

A) Hertz
B) Watt
C) Joule
D) Volt
E) Half-life

A car is traveling with uniform acceleration along a straight road. The road has marker posts every 100 m. When the car passes one post, it has a speed of 10 m/s and when it passes the next one, its speed is 20 m/s. What is the car’s acceleration?

NTS 2017
Physics
Forces and Motion
Equations of Uniformly Accelerated Motion
Elimination Tool:

A) 0.67 m/s2
B) 1.5 m/s2
C) 2.5 m/s2
D) 6.0 m/s2

A fixed mass of gas in a thermally insulated container is compressed. After compression, the temperature of the gas will have:

NTS 2017
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
Elimination Tool:

A) fallen, since more molecules bombarded the container and so they must be moving slower
B) fallen, since more molecules collide more frequently with one another and so their average speed is lower
C) remained constant if the compression is very slow
D) risen, since doing work on the gas increases the kinetic energy of the molecules
E) risen, since there are more intermolecular collisions and so more heat is produced by them

A person having a mass of 60 kilograms exerts a horizontal force of 200 Newtons in pushing a 90 kilogram object a distance of 6 meters along a horizontal floor. He does this at constant velocity in 3 seconds. The weight of this person approximately, in Newtons, is: (g=9.8m/s2)

NTS 2017
Physics
Forces and Motion
Newton’s Laws of Motion
Elimination Tool:

A) 40 N
B) 90 N
C) 200 N
D) 400 N
E) 600 N

The lightest element which exhibits radioactivity is:

NTS 2017
Physics
Nuclear Physics
Radioactivity
Elimination Tool:

A) Hydrogen
B) Deuteron
C) Tritium
D) Helium

A ball falls vertically and bounces on the ground. The following statements are about the forces acting while the ball is in contact with the ground. Which statement is correct?

NTS 2017
Physics
Forces and Motion
Newton’s Laws of Motion
Elimination Tool:

A) The force that the ball exerts on the ground is always equal to the weight of the ball.
B) The force that the ball exerts on the ground is always equal in magnitude and opposite in direction to the force the ground exerts on the ball.
C) The force that the ball exerts on the ground is always greater than the weight of the ball.
D) Both A and C

Incident rays of light parallel to the principal axis of a convex lens, after refraction by the lens, will:

NTS 2017
Physics
Optics, Nature of Light and Optical Instruments
Magnifying and Resolving Power of Optical Instruments
Elimination Tool:

A) converge at the principal focus
B) converge inside the principal focus
C) converge outside the principal focus
D) converge at the center of curvature
E) diverge as long as theý are close to the lens

With the usual notation, the first law of thermodynamics applied to one mole of an ideal gas can be written in the following form:

CvΔT=ΔQ – PΔV

In a change for which Boyle’s law is obeyed, which of the following would necessarily be zero?

NTS 2017
Physics
Heat and Thermodynamics
First Law of Thermodynamics
Elimination Tool:

A) ΔQ
B) Cv
C) ΔT
D) P
E) ΔV

The sum of all forms of molecular energies in a thermodynamic system is known as:

NTS 2017
Physics
Heat and Thermodynamics
Internal Energy
Elimination Tool:

A) Entropy
B) Enthalpy
C) Internal energy
D) Red shift

_______ is also known as anti-electron.

NTS 2017
Physics
Nuclear Physics
Elimination Tool:

A) Photon
B) Proton
C) Positron
D) Nucleon

If 500 cm3 of gas, having a pressure of 760 millimeters of mercury, is compressed into a volume of 300 cm3. If the temperature remains constant, the pressure of the gas will be, in millimeters of mercury, approximately:

NTS 2017
Physics
Heat and Thermodynamics
Elimination Tool:

A) 500
B) 900
C) 1,100
D) 1,270
E) 1,500

A row of 25 decorative lights, connected in series, is connected to a main transformer. When the supply is switched on, the lights do not work. The owner uses a voltmeter to test the circuit. When the voltmeter is connected across the third bulb in the row, a reading of zero is obtained. Which of the following cannot be the only fault in the circuit?

NTS 2017
Physics
Current Electricity
Electomotive Force and Potential Difference
Elimination Tool:

A) The filament of one of the other bulbs has broken
B) The filament of the third bulb has broken.
C) The fuse in the mains transformer has blown.
D) There is a break in the wire from the supply to the transformer.

If two sounds have the same wavelength in air at the same temperature, what other property must they also have in common?

Intensity
Amplitude
Frequency
NTS 2017
Physics
Wave Motion and Sound
Periodic Waves
Elimination Tool:

A) I only
B) III only
C) I and II only
D) II and III only
E) I, II and III

Charges of +2 μC and -2 μC are situated at points P and Q respectively, as shown below. X is midway between P and Q. Which of the following correctly describes the electric field and the electric potential at point X?

NTS 2017
Physics
Electrostatics
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D
E) Option E

A fixed mass of an ideal gas absorbs 1000 J of heat and expands under a constant pressure of 20 kPa from a volume of 25 x 10-3 m3 to a volume of 50 x 10-3 m3. What is the change in the internal energy of the gas?

NTS 2017
Physics
Heat and Thermodynamics
First Law of Thermodynamics
Elimination Tool:

A) －1000J
B) －900J
C) Zero
D) ＋500 J
E) ＋1000J

A unit of induction is said to exist at a point where the force per unit charge experienced by a positive test charge, moving with a velocity of 1ms-1 in the direction perpendicular to the field is 1 Newton. What is this phenomenon called?

NTS 2017
Physics
Magnetism and Electromagnetic Induction
Magnetic Field Due to Current in a Long Straight Wire
Elimination Tool:

A) Gravitational Field
B) Magnetic Field
C) Magnetic Flux
D) Flux

The circuit diagram shows a network of resistors each of resistance R.

What is the effective resistance between the points X and Y?

NTS 2017
Physics
Current Electricity
Electrical Power and Power Dissipation in Resistors
Elimination Tool:

A) 2R/7
B) R/2
C) 5R/8
D) 2R/3
E) 3R/4

A sample of an ideal gas may : expand adiabatically or expand isothermally. The net flow of heat into the gas from the exterior is:

NTS 2017
Physics
Heat and Thermodynamics
First Law of Thermodynamics
Elimination Tool:

A) Positive in each case
B) Negative for I and positive for II
C) Positive for I and negative for II
D) Zero in each case
E) Zero in I and positive for II

Identify errors in the sentences:

During the day, there is often two guards at the entrance.

NTS 2017
English
Identify errors in sentence
Elimination Tool:

A) During
B) there is
C) guards
D) No error.

Read the passage to answer question:

Due to the extremely hot weather, the electric company is planning to turn off power in certain districts during the day. This will reduce the total demand for electricity and prevent a city-wide shutdown of electrical services. Power will not be out longer than two hours in your area. For further information, please visit our Web site at www.electricity.com. All areas affected by the shutdown are listed there, as well as the times that the power will be turned off in each area.

Why is the power being turned off?

NTS 2017
English
Passage
Elimination Tool:

A) To reduce total demand.
B) To save money.
C) To make it cooler
D) To make the city pay its bill.

Choose the lettered word or phrase that is most nearly opposite in meaning to the word in capital letters.

MANDATORY:

NTS 2017
English
Key Vocabulary
Elimination Tool:

A) dispassionate
B) obligatory
C) voluntary
D) confirmed
E) unhappy

Identify errors in the sentences:

Because of their identical appearance and dress, the twins were often mistaken for each other.

NTS 2017
English
Identify errors in sentence
Elimination Tool:

A) Because of
B) identical
C) and dress
D) were
E) No error

Complete the sentence by choosing the most appropriate option:

Some people ______ claim to be vegetarians actually allow themselves to eat fish and chicken.

NTS 2017
English
Fill in the blank
Elimination Tool:

A) that
B) which
C) whom
D) who

Choose the lettered word or phrase that is most nearly opposite in meaning to the word in capital letters.

HONESTY:

NTS 2017
English
Key Vocabulary
Elimination Tool:

A) clever
B) dishonesty
C) resolution
D) failure

Read the passage and answer the following question:

Due to the extremely hot weather, the electric company is planning to turn off power in certain districts during the day. This will reduce the total demand for electricity and prevent a city-wide shutdown of electrical services. Power will not be out longer than two hours in your area. For further information, please visit our Web site at www.electricity.com. All areas affected by the shutdown are listed there, as well as the times that the power will be turned off in each area.

How long will power be off?

NTS 2017
English
Passage
Elimination Tool:

A) Longer than two hours.
Show Explanation
B) Less than two hours.
Show Explanation
C) For one day.
Show Explanation
D) Until the weather changes.
Show Explanation

Complete the sentence by choosing the most appropriate option:

There _____ many students waiting to hear the results of the test.

NTS 2017
English
Fill in the blank
Elimination Tool:

A) has
B) have
C) was
D) are

Choose the word most similar in meaning to the capitalized word:

PROVOKE:

NTS 2017
English
Key Vocabulary
Elimination Tool:

A) deface
B) lionize
C) remove
D) punish
E) aggravate

Choose the word most similar in meaning to the capitalized word:

THREATENING:

NTS 2017
English
Key Vocabulary
Elimination Tool:

A) flighty
B) aggressive
C) chaste
D) hallowed
E) global

All of the following are mammals EXCEPT the:

NTS 2017
Biology
Kingdom Animalia
Phylums – porifera to chordata
Elimination Tool:

A) Porpoise
B) Shark
C) Whale
D) Walrus
E) Seal

Viruses resemble living things because they:

NTS 2017
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Circulate
B) Move
C) Reproduce
D) Are crystalline
E) Are able to respond to stimuli in the environment

Which features do animal cells share with plant cells?

NTS 2017
Biology
Cell Structure and Function
Compare the structure of a typical plant and animal cell
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D

A part of the digestive system that is not in contact with food is the:

NTS 2017
Biology
Nutrition
Digestion and Absorption
Elimination Tool:

A) Small intestine
B) Stomach
C) Liver
D) Large intestine
E) Oesophagus

The diagram below illustrates:

NTS 2017
Biology
Chromosomes and DNA
Mutations
Elimination Tool:

A) Hemophilia
B) Phenylketonuria
C) Sickle cell anemia
D) Down’s Syndrome

Humoral immunity is carried by a special group of cells called:

NTS 2017
Biology
Transport
Elimination Tool:

A) B-cells
B) Killer cells
C) Helper cells
D) Null cells

The following organism moves by means of:

NTS 2017
Biology
Support and Movement
Locomotion in Protoctista and Invertebrates
Elimination Tool:

A) Peristalsis
B) Pinocytosis
C) Porifera
D) Protozoa
E) Pseudopodia

A student studied a drop of pond water with the low power of compound microscope and made the following exact drawing of an organism she observed:

Which kingdom is the organism classified as?

NTS 2017
Biology
Kingdom Protista
Diversity and major groups of protista
Elimination Tool:

A) Protista
B) Monera
C) Metazoa
D) Animal
E) Bryophyta

The following sequence of events occurs at the neuromuscular junction.

nerve impulse → release of V→ end plate potential → W produced in muscle fibre → X released from sarcoplasmic reticulum→ formation of Y → muscle contraction

Which one of the following shows the correct sequence from V-Y?

NTS 2017
Biology
Coordination and Control
Steps Involved in Nervous Coordination
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D
E) Option E

The phenomenon known as crossing-over occurs during:

NTS 2017
Biology
Chromosomes and DNA
The Chromosomal Theory of Inheritance
Elimination Tool:

A) Mitosis
B) Meiosis
C) Geographic distribution
D) Active transport

Which group of organisms has the following features?

I. three pairs of jointed legs

II. three-part segmented body

III. one pair of antennae

NTS 2017
Biology
Kingdom Animalia
Phylums – porifera to chordata
Elimination Tool:

A) arachnids
B) crustaceans
C) Insects
D) myriapods

The diagram shows some organs of the digestive system.

Where is amylase present?

NTS 2017
Biology
Nutrition
Digestion and Absorption
Elimination Tool:

A) 1,4 and 5
B) 1,2 and 3
C) 2,6 and 4
D) 3,5 and 4

Platyhelminthes means:

NTS 2017
Biology
Kingdom Animalia
Phylums – porifera to chordata
Elimination Tool:

A) Flat worms
B) Roundworms
C) Segmented worms
D) None of the above

Bacteria having a tuft of flagella at one end are called:

NTS 2017
Biology
Kingdom Prokaryote
Motility and Nutrition in Bacteria
Elimination Tool:

A) Peritrichous
B) Monotrichous
C) Lophotrichous
D) Amphitrichous

In a pyramid of energy, which level represents the greatest amount of energy?

NTS 2017
Biology
Man and His Enviornment
Elimination Tool:

A) Producers
B) First-order consumers
C) Second-order consumers
D) Third-order consumers
E) Decomposers

Cystic fibrosis patients lack a gene that codes for a transmembrane carrier of:

NTS 2017
Biology
Biotechnology
Gene Therapy
Elimination Tool:

A) Na+ ions
B) K+ ions
C) CI- ions
D) Ca2+ ions
E) Mg2+ ions

Pyruvic acid is the end product of:

NTS 2017
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
Elimination Tool:

A) Glycolysis
B) Krebs cycle
C) Oxidation
D) Electron transport system

Human cells maintain concentration gradients across their plasma membranes, such that there is a high sodium concentration outside the cell and a high potassium concentration inside the cell.

Suppose that within the cell membrane are sodium leak channels or carrier proteins. These channels would allow sodium to:

NTS 2017
Biology
Coordination and Control
Coordination in Animals
Elimination Tool:

A) move out of the cell by simple diffusion
B) move into the cell by simple diffusion
C) move out of the cell by facilitated diffusion
D) move into the cell by facilitated diffusion

The table shows some characteristics of four different vertebrates. Which vertebrate is a reptile?

✓= feature present

x = feature absent

NTS 2017
Biology
Kingdom Animalia
Phylums – porifera to chordata
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D

The hormone labeled X in the diagram is:

NTS 2017
Biology
Reproduction
Elimination Tool:

A) Estrogen
B) Progesterone
C) FSH
D) LH
E) Testosterone

All of the following protect the body against the entrance of germs except:

NTS 2017
Biology
Transport
Elimination Tool:

A) Tears
B) Mucous membranes
C) Ciliated cells
D) White blood cells
E) Red blood cells,

Identify the correctly matched pair relating to a term and its meaning/function/example:

NTS 2017
Biology
Man and His Enviornment
Elimination Tool:

A) nitrogen cycle… Rhizopus
B) denitrifying bacteria..change protein to ammonia
C) biosphere.. where life exists
D) lithosphere…water , air and soil on the surface of earth

Based on the peak levels of hormone X, on what day of the cycle is ovulation most likely to occur?

NTS 2017
Biology
Reproduction
Reproduction in Females
Elimination Tool:

A) Day 21
B) Day 14
C) Day 12
D) Day 25
E) Day 28

Which of the following RNA sequences would be transcribed from the DNA sequence ATGGCTAGGAC?

NTS 2017
Biology
Chromosomes and DNA
DNA Replication
Elimination Tool:

A) TACGGATCCTG
B) UAGCGAUCCUG
C) AUGCCUAGGAC
D) UACCGAUCCUG
E) GCAUUCGAAGU

Which of the following is correctly matched?

NTS 2017
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

A) AF, BG, CJ, DI, EH
B) AH, BI, DF, CG, EJ
C) AJ, BI, CH, DG, EF
D) AH, BF, DG, CI, EJ

Which of the following statement(s) is/are correct regarding a nucleus?

I.Stores wastes and other Substances

II.Contains genetic material

III.Helps in cellular transport system

IV.Control centre of the cell

NTS 2017
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

A) I only
B) I&II
C) II & III
D) II & IV
E) III & IV

In the pedigree of a family shown above, brown eyes are indicated as white circles and blue eyes as dark circles. Javeria and Juhi are twins. From this chart, it can be determined that:

NTS 2017
Biology
Variation and Genetics
Sex Linkage
Elimination Tool:

A) Tahir and Mary are homozygous for brown eyes
B) Jawaria and Juhi are identical twins
C) Juhi is heterozygous for blue eyes
D) Juhi is homozygous for blue eyes
E) Jawaria and Saad are homozygous for brown eyes

The diagram below represents the process of:

NTS 2017
Alcohols, Phenols and Ethers
Chemistry
Elimination Tool:

A) Hydrolysis
B) Condensation
C) Neutralization
D) Metabolism

Which bones meet at the elbow joint and what kind of movement

Do they allow it?

NTS 2017
Biology
Support and Movement
Types of Joints
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D

The hormone labelled X in the diagram is often used in over-the-counter diagnostic tests to determine when ovulation has occurred. This hormone is:

NTS 2017
Biology
Reproduction
Reproduction in Females
Elimination Tool:

A) estrogen
B) progesterone
C) FSH
D) LH
E) Testosterone

The quantum numbers +½ and -½ for the electron spin represent:

NTS 2017
Chemistry
Atomic Structure
Plancks Quantum Theory
Elimination Tool:

A) Rotation of the electron in clockwise and anticlockwise direction respectively
B) Rotation of the electron in anticlockwise and clockwise direction respectively
C) Magnetic movement of the electron pointing up and down respectively
D) Two quantum mechanical spin states which have no classical analogue

The process in which electric current is used to carry out a non-spontaneous redox reaction is called:

NTS 2017
Chemistry
Electrochemistry
Electrolysis
Elimination Tool:

A) Electrolyte
B) Electrolysis
C) Metallic conductor
D) None of the above

Which of the following statements about H2S is false?

NTS 2017
Chemistry
Periodicity in Elements
Introduction to the Periodic Table
Elimination Tool:

A) It is a covalent compound
B) It is a gas with bad smell
C) It is a stronger reducing agent than H2O
D) It is a weak base in water

The formula of Plaster of Paris is:

NTS 2017
Chemistry
Solution and Colloids
Colligative Properties of Solutions
Elimination Tool:

A) (CaSO4).1/2H2O
B) (CaSO4).5H2O
C) (CaSO4).7H2O
D) (CaSO4).9H2O

All amino acids contain the functional group:

NTS 2017
Chemistry
Alkyl Halides and Amines
Introduction to Alkyl Halides and Amines
Elimination Tool:

A) NH2
B) CO2
C) S2-
D) Both A and B

The value K for H2(g) + CO2(g) H2O(g) + CO(g) is 1.80 at 1000 C. If 1.0 mole of each H2 and CO2 are placed in 1 litre flask, the final equilibrium concentration of CO at 1000 C will be:

NTS 2017
Chemistry
Chemical Equilibrium
State of Chemical Equilibrium
Elimination Tool:

A) 0.295 M
B) 0.385 M
C) 0.531 M
D) 0.573 M

In the reaction 2Fe+Cl2 2FeCl3

NTS 2017
Chemistry
Electrochemistry
Redox Equations
Elimination Tool:

A) Fe is reduced
B) Fe is oxidized
C) Cl2 oxidized
D) None of the above

Which of the following pairs of gases have same rate of diffusion:

NTS 2017
Chemistry
States of Matter – Gases, Liquids and Solids
Diffusion And Effusion
Elimination Tool:

A) CO2 and N2O
B) CO2 and CO
C) NO2 and CO2
D) CO2 and N2O4

Alanine, lysine and tryptophan are:

NTS 2017
Chemistry
Chemistry of Life
Proteins
Elimination Tool:

A) Carbohydrates
B) Lipids
C) Enzymes
D) Amino acids

The molecular structure of a hydrocarbon is shown below.

NTS 2017
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D

How would an ammonia group affect the benzene ring for subsequent reactions?

NTS 2017
Chemistry
Alkyl Halides and Amines
Introduction to Alkyl Halides and Amines
Elimination Tool:

A) Deactivate the ring; meta directing
B) Activate the ring; ortho-para directing
C) Deactivate the ring; ortho-para directing
D) Activate the ring; meta directing

For the equilibrium reaction 2 NO2 N2O4 (g) (-61 kJ), increase of temperature would:

NTS 2017
Chemistry
Chemical Equilibrium
State of Chemical Equilibrium
Elimination Tool:

A) Favour the Formation of N2O4
B) Favour the Decomposition of N2O4
C) No Effect on Equilibrium
D) Stop the Reaction

Which of the following statements is correct?

NTS 2017
Chemistry
Acids, Bases and Salts
Acidic, Basic and Amphoteric Substances
Elimination Tool:

A) H3PO3 is dibasic and reducing
B) H3PO3 is tribasic and reducing
C) H3PO3 is tribasic and non-reducing
D) H3PO3 is dibasic and non-reducing

Which of the following would be the best solvent for an SN2 reaction?

NTS 2017
Chemistry
Alcohol, Phenols, and Ethers
Elimination Tool:

A) H2O
B) CH3CH2OH
C) CH3SOCH3
D) CH3CH2CH2CH2CH2CH3

What would be the major product of the following reaction?

NTS 2017
Chemistry
Aldehydes and Ketones
Reactivity and Reactions of Carbonyl Group
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D

Most abundant salt of sodium in nature is:

NTS 2017
Chemistry
s and p Block Elements
Introduction to s and p Block Elements
Elimination Tool:

A) NaNO3
B) Na2SO4
C) NaOH
D) NaCl

A gas that reacts with CaO and not with NaHCO3 is:

NTS 2017
Chemistry
Periodicity in Elements
Introduction to the Periodic Table
Elimination Tool:

A) CO2
B) CI2
C) O2
D) N2

Which of the following values of heat of formation indicates that the product is least stable?

NTS 2017
Chemistry
Thermochemistry
Heat Capacity and Calorimetry
Elimination Tool:

A) -393.5 KJ
B) -972.7 KJ
C) +89.9 KJ
D) +272.2 KJ

What happens when one mole of ethane is mixed in the dark at room temperature with six moles of chlorine?

NTS 2017
Chemistry
Hydrocarbons
Comparison of Reactivities of Alkanes, Alkenes and Benzene
Elimination Tool:

A) There is no reaction.
B) CH3CH2Cl and HCl are formed.
C) CH3CCl3 and HCl are formed.
D) CCl3CCl3 and HCl are formed.
E) Carbon and HCl are formed.

The enthalpy of certain reactions at 273 K is -20.75 kJ. The enthalpy of the same reaction at 373 K (if heat capacities of reactants and products are the same) will be:

NTS 2017
Chemistry
Thermochemistry
Enthalpies of Reactions and its Types
Elimination Tool:

A) －20.75 kJ
B) -2075 kJ
C) Zero
D) －20.75 x 373/273 kJ

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?

NTS 2017
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 450 K
B) 800 K
C) 600 K
D) 900 K

A correct formula must:

NTS 2017
Chemistry
Chemical Equilibrium
State of Chemical Equilibrium
Elimination Tool:

A) Be balanced with proper coefficients
B) Always have subscripts
C) Always conform to the valency rules
D) Always conforms to the law of multiple proportions

A compound was found to contain nitrogen and oxygen in the ratio 28g:80g. The formula of the compound is:

NTS 2017
Chemistry
Stoichiometry
Mole
Elimination Tool:

A) NO
B) N2O3
C) N2O4
D) N2O5

When B- particles are sent through a thin metal foil, most of them go straight through the foil as:

NTS 2017
Chemistry
Atomic Structure
Rutherfords Model of Atom
Elimination Tool:

A) B- particles are much heavier than electrons
B) B- particles are positively charged
C) Most part of the atom is empty space
D) B- particles move with high velocity

The amount of solute present in the given amount of solvent is called:

NTS 2017
Chemistry
Solution and Colloids
Concentration Units of Solutions
Elimination Tool:

A) Molarity
B) Molality
C) Concentration
D) Solubility

Electronic configuration of M2+ ion is 2, 8, 14 and its atomic weight is 56 amu. The number of neutrons in its nucleus are:

NTS 2017
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
Elimination Tool:

A) 30
B) 32
C) 42
D) 52

What is the product of the reaction below?

NTS 2017
Chemistry
Aldehydes and Ketones
Reactivity and Reactions of Carbonyl Group
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D

The product Y for the below reaction is:

NTS 2017
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
Elimination Tool:

A) Option A
B) Option B
C) Option C
D) Option D

What is the volume in cm3 of 3.01 x 10^23 molecules of O2 gas at S.T.P.?

NTS 2017
Chemistry
Elimination Tool:

A) 1000 cm3
B) 11000 cm3
C) 1120 cm3
D) 11200 cm3

Ionic, covalent and co-ordinate covalent bonds are simultaneously present in the molecular geometry of:

NTS 2017
Chemistry
Chemical Bonding
Covalent Bond
Co-ordinate or dative covalent bond
Electrovalent or Ionic Bond
Elimination Tool:

A) Ammonia
B) Ammonium hydroxide
C) Hydrochloric acid
D) Water
E) Methane