The amount (in litres) of Oxygen at STP that is required for the combustion of 4gm of ethylene is:

HEC I 2017
Chemistry
Elimination Tool:

A) 96 litres
B) 9.6 litres
C) 44.8 litres
D) 67.2 litres

Which one of the following organic compound has the least carbon – carbon bond length?

HEC I 2017
Chemistry
Elimination Tool:

A) Ethane
B) Ethene
C) Ethyne
D) Methane

H2 and O2 are diffusing under the same condition how much H2 gas will diffuse?

HEC I 2017
Chemistry
Elimination Tool:

A) 4
B) 16
C) 10.5
D) 30

Which one of the following free radical is most stable?

HEC I 2017
Chemistry
Elimination Tool:

A) CH3+
B) (CH3)2CH+
C) (CH3)3C+
D) C2H5+

CO2 and O2 diffuse in the ratio of 0.58:0.55 what is the mass of O2:

HEC I 2017
Chemistry
Elimination Tool:

A) 2.44
B) 23.2
C) 48.93
D) 2.32

The correct icnreasing order fo electron affinity value of atom is:

HEC I 2017
Chemistry
Elimination Tool:

A) I < Br < F < Cl B) I < Cl < F < Br C) I < F < Br < Cl D) F < Cl < Br < I

Which of the following is the least reactive alkali metal?

HEC I 2017
Chemistry
Elimination Tool:

A) Rubidium
B) Potassium
C) Sodium
D) Cesium

Maleic acid and fumaric acid are:

HEC I 2017
Chemistry
Elimination Tool:

A) Cis Trans isomers
B) Chain isomers
C) Position isomers
D) Metamers

Which of the following indicate the correct variation of electro negativity?

HEC I 2017
Chemistry
Elimination Tool:

A) F > N > O > C
B) F > N C
C) F < N < O N > O < C

All of the following react with KMnO4 but:

HEC I 2017
Chemistry
Elimination Tool:

A) Ethane
B) Ethyne
C) Ethyl benzene
D) Ethene

Formalin is an aqueous solution of:

HEC I 2017
Chemistry
Elimination Tool:

A) Formic acid
B) Formaldehyde
C) Furfuraldehyde
D) Acetone

The test used to distinguish among primary, secondary and tertiary alcohols is:

HEC I 2017
Chemistry
Elimination Tool:

A) 2, 4 – DNPH test
B) Tollen’s test
C) Lucas test
D) Fehling’s solution test

If a person is injected by a shot of a gun and all the bullets are not removed from his body it may cause poisoning by:

HEC I 2017
Chemistry
Elimination Tool:

A) Hg
B) Pb
C) Fe
D) As

In this reaction, NH4+ + H2O -> H3O+ + NH3 the conjugate base of H3O+ ion is:

HEC I 2017
Chemistry
Elimination Tool:

A) NH4+
B) H2O
C) H+
D) NH3

A catalyst is a substance which:

HEC I 2017
Chemistry
Elimination Tool:

A) Stops the reaction
B) Decreases the rate of reaction
C) Alters the rate of reaction
D) Increases the rate of reaction

A solution of Sodium Sulphate was electrolyzed using some inert electrode; the products at the electrodes are:

HEC I 2017
Chemistry
Elimination Tool:

A) O2, H2
B) O2, Na
C) O2, SO2
D) O2, S2O4-2

Which order reaction obey the expression t1/2 = 1/Ka

HEC I 2017
Chemistry
Elimination Tool:

A) First
B) Second
C) Third
D) Zero

The relation between first and second ionization potentials of a given atom is:

HEC I 2017
Chemistry
Elimination Tool:

A) I1 I2
C) I1 = I2
D) None of these options

For a single step reaction A+B —> 2C, the rate law is:

HEC I 2017
Chemistry
Elimination Tool:

A) Rate = k
B) Rate = k [A] [B]
C) Rate = k [A]
D) Rate = k [B]

Which is not a meta-directing group?

HEC I 2017
Chemistry
Elimination Tool:

A) -NO2
B) -COOH
C) -NH2
D) -COR

The number of isomers of C3H7-Cl?

HEC I 2017
Chemistry
Elimination Tool:

A) 2
B) 3
C) 4
D) 6

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

HEC I 2017
Chemistry
Elimination Tool:

A) Esters
B) Ethers
C) Aldehydes
D) Ketones

The process of depositing a thin layer of expensive metals on ordinary or expensive metals is called:

HEC I 2017
Chemistry
Elimination Tool:

A) Electroplating
B) Conductivity
C) Galvanizing
D) Metallurgy

Nitric Oxide has valence electrons?

HEC I 2017
Chemistry
Elimination Tool:

A) 10
B) 13
C) 11
D) 12

The value of surface tension of isopropyl alcohol is:

HEC I 2017
Chemistry
Elimination Tool:

A) Less than water
B) Less than ethylene glycol
C) Less than methyl alcohol
D) Same as ethyl alcohol

The reaction 2RX + 2Na -> RR + 2NaX is an example of:

HEC I 2017
Chemistry
Elimination Tool:

A) Cannizaro’s reaction
B) Kolbe’s reaction
C) Sabatier & Senderen’s reaction
D) Wurtz reaction

The products of decomposition of Mg(NO3)2 are:

HEC I 2017
Chemistry
Elimination Tool:

A) MgO and NO2
B) Mg and NO2
C) MgO, NO2, O2
D) Mg(NO3)2

Commercial hydrogen can be obtained by the action of a steam on:

HEC I 2017
Chemistry
Elimination Tool:

A) Marsh gas
B) Coal gas
C) Producer gas
D) None of these options

Which metal is used generally for the filament of electric bulbs?

HEC I 2017
Chemistry
Elimination Tool:

A) Pt
B) Fe
C) Cu
D) W

The elements with atomic numbers 10, 18, 36, 54 and 86 are:

HEC I 2017
Chemistry
Elimination Tool:

A) Light metals
B) Inert gases
C) Halogens
D) Rare earth metals

It is the smallest eukaryote:

HEC I 2017
Biology
Elimination Tool:

A) Virus
B) Bacteria
C) Plasmodium
D) Sponge

Brassica and rose plant belong to the group of plants:

HEC I 2017
Biology
Elimination Tool:

A) Hydrophytes
B) Mesophytes
C) Xerophytes
D) Succulant

When a haemophilic carrier woman marries a normal man, who among her offspring may be affected?

HEC I 2017
Biology
Elimination Tool:

A) All her children
B) All her daughters
C) Half of her daughters
D) None of these options

The word glycogenesis means, the conversion of:

HEC I 2017
Biology
Elimination Tool:

A) Glucose to glycogen
B) Lactic acid to glycogen
C) Glycogen to glucose
D) Amino acid to glycogen

Which trait is not sex-linked recessive:

HEC I 2017
Biology
Elimination Tool:

A) Haemophilia
B) Colour blidness
C) Hypophosphatemic ricket
D) TFM syndrome

The cell membrane of a bacterial cell often invaginates to produce membranous structures referred to as:

HEC I 2017
Biology
Elimination Tool:

A) Mesosomes
B) Centrosomes
C) Dictyosomes
D) Polysomes

Goiter is one of the abnormalities due to the deficiency of hormone:

HEC I 2017
Biology
Elimination Tool:

A) Adrenaline
B) Thryoxin
C) Oxytocin
D) Parathormone

Mitosis can’t take place in bacteria because they lack:

HEC I 2017
Biology
Elimination Tool:

A) Chromosomes
B) Nucleus
C) Centrosome
D) Mesosomes

Two parents hemophilic and other carrier, chances among the male offspring to be hemophilic:

HEC I 2017
Biology
Elimination Tool:

A) 25%
B) 50%
C) 75%
D) 100%

Dark reaction of photosynthesis takes place:

HEC I 2017
Biology
Elimination Tool:

A) Grana
B) Stroma
C) Thylakoid
D) Both grana and stroma

Which bond is present between the nucleotides of DNA:

HEC I 2017
Biology
Elimination Tool:

A) Peptide bond
B) Phosphodiester bond
C) Glycosidic bond
D) Ester bond

All of the following are characteristics of kingdom fungi except:

HEC I 2017
Biology
Elimination Tool:

A) Heterotrophy
B) Sessile
C) Cell wall
D) All of these options are true for fungi

The haploid number of chromosomes in human beings:

HEC I 2017
Biology
Elimination Tool:

A) 4
B) 10
C) 24
D) 23

Ustilago maydis is the scientific name of a?

HEC I 2017
Biology
Elimination Tool:

A) Fungus
B) Smut
C) Bacterium
D) Yeast

Curve screw shaped bacteria are known:

HEC I 2017
Biology
Elimination Tool:

A) Cocci
B) Bacilli
C) Spirilla
D) None of these

Animals which are unable to adjust their internal salt concentration according to the external environment are:

HEC I 2017
Biology
Elimination Tool:

A) Anhydrobiosis
B) Osmoregulators
C) Thermoregulatory
D) Osmoconformers

The DNA of the bacterium is present in distinct region called:

HEC I 2017
Biology
Elimination Tool:

A) Nucleolus
B) Centrosome
C) Nucleoid
D) Nucleus

Role of lysosomes are:

HEC I 2017
Biology
Elimination Tool:

A) Hydrolytic enzymes
B) Autophagy
C) Destruction of cell
D) All of these options

The mechanism by which organisms stability of cellular movement is known as:

HEC I 2017
Biology
Elimination Tool:

A) Homeostasis
B) Natural health
C) Strucutral adaptation
D) Osmoregulation

Which of the following animal can survive without drinking water?

HEC I 2017
Biology
Elimination Tool:

A) Kangaroo rat
B) Pig
C) Camel
D) Kangaroo

The oxygen bonding protein present in the skeletal muscles is:

HEC I 2017
Biology
Elimination Tool:

A) Globin
B) Myoglobin
C) Myoglycogen
D) Glycogen

Which of the following staternent is incorrect:

HEC I 2017
Biology
Elimination Tool:

A) Competitive inhibitor binds to alternative site
B) The substrate binds to active site
C) Enzymes work best in low pH
D) Both competitive inhibitor binding to alternative site & substrate binding to active site

ADH which actively transports water from the filtrate in collecting tubules back to kidney is released by?

HEC I 2017
Biology
Elimination Tool:

A) Pituitary gland
B) Adrenal gland
C) Rectal gland
D) Both Pituitary and Rectal glands

Pulmonary veins supply blood to the heart chamber:

HEC I 2017
Biology
Elimination Tool:

A) Right atrium
B) Left atrium
C) Right ventricle
D) Left ventricle

Homeostasis thermostat is present in the brain:

HEC I 2017
Biology
Elimination Tool:

A) Hypothalamus
B) Medulla
C) Cerebrum
D) Pons

Apparently which bacteria are more resistant to antibiotics?

HEC I 2017
Biology
Elimination Tool:

A) Gram positive bacteria
B) Gram negative bacteria
C) Both Gram positive & negative
D) None of these

Nitrogenous wastes are produced as a result of:

HEC I 2017
Biology
Elimination Tool:

A) Photosynthesis
B) Ingesiton
C) Assimilation
D) Deamination

When the concentration of the external medium is equal to the concentration of the internal medium of the cell, the situation is called:

HEC I 2017
Biology
Elimination Tool:

A) Hypertonic
B) Hypotonic
C) Isotonic
D) Heterotonic

In many bacteria cell wall is enclosed within a slime capsule made up of:

HEC I 2017
Biology
Elimination Tool:

A) Polysaccharides
B) Cellulose
C) Amino Acids
D) Proteins

The sensation of pleasure, punishment or sexual arousal when stimulated by the parts of the brain:

HEC I 2017
Biology
Elimination Tool:

A) Hippocampus
B) Hypothalamus
C) Amygdala
D) Thalamus

Freshwater proteroants pumped out excess water by a special structure called:

HEC I 2017
Biology
Elimination Tool:

A) Oral groove
B) Contractive vacuole
C) Vesicle
D) Vacuole

The stored food in fungi is usually droplets of:

HEC I 2017
Biology
Elimination Tool:

A) Glucose
B) Glycogen
C) Starch
D) Protein

The bacteria can cope unfavourable condition by producing?

HEC I 2017
Biology
Elimination Tool:

A) Mesosomes
B) Zygospores
C) Endospores
D) Cysts

Rod shaped bacteria are known as:

HEC I 2017
Biology
Elimination Tool:

A) Cocci
B) Bacilli
C) Spirilla
D) None of these

Plants of this group are called ferns:

HEC I 2017
Biology
Elimination Tool:

A) Filicinae
B) Angiospermae
C) Gymnospermae
D) All of these options

Uncontrolled production of WBC’s results in a disorder called:

HEC I 2017
Biology
Elimination Tool:

A) Leukemia
B) Edema
C) Thalassemia
D) Atherosclerosis

Which of the following nitrogenous compound is much more soluble in water?

HEC I 2017
Biology
Elimination Tool:

A) Uric Acid
B) Urea
C) Ammonia
D) Creatine

The cellular DNA of a bacterium is known as the:

HEC I 2017
Biology
Elimination Tool:

A) Plasmid
B) Genes
C) Chromosomes
D) Histone

Trypsinogen is activated by:

HEC I 2017
Biology
Elimination Tool:

A) Chymotrypsin
B) Enteropeptidase
C) Trypsin
D) HCl

The excretory product that requires minimum water for its elimination compare to others:

HEC I 2017
Biology
Elimination Tool:

A) Creatinine
B) Ammonia
C) Urea
D) Uric acid

She asked me _______.

HEC I 2017
English
Elimination Tool:

A) Bring a glass of water for her.
B) To bring a glass of water for me.
C) To bring a glass of water for her.
D) None of these.

When your friend _______, he’ll be very tired.

HEC I 2017
English
Elimination Tool:

A) Arrived
B) Arrives
C) Will arrive
D) Is arriving

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

I have visited them a couple of times during my stay in Mexico.

HEC I 2017
English
Elimination Tool:

A) Have
B) Couple
C) Of
D) Stay

Choose the word most similar in meaning to the given.

COMMENCE

HEC I 2017
English
Elimination Tool:

A) To end
B) To begin
C) Nearing Finish
D) To Run

Pick up the wrong one:

Though I thought I had hardly left any book unread. I am surprised that I have read none of these two books.

HEC I 2017
English
Elimination Tool:

A) Had
B) Unread
C) Have
D) None

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

Pale sunlight filters from the trees, throwing veiled patches of hold onto the brown river where cattle drink under the watchful eye of a young herdsman.

HEC I 2017
English
Elimination Tool:

A) From
B) Onto
C) Under
D) Of

Pick up the wrong one:

Nothing can be helpful to check the evils than the fear of God.

HEC I 2017
English
Elimination Tool:

A) Nothing
B) Helpful
C) Check
D) Than

Pick up the wrong one:

Each of the defaulters were heavily fined for delay in payment of dues.

HEC I 2017
English
Elimination Tool:

A) Were
B) Fined
C) Delay
D) Payment

Choose the word most similar in meaning to the given.

ABSOLUTE

HEC I 2017
English
Elimination Tool:

A) Division
B) Complete
C) Small
D) Half

He asked me _______.

HEC I 2017
English
Elimination Tool:

A) How are you?
B) How was l?
C) How you are?
D) How I was.

Choose the word nearly opposite in meaning to the given word.

ANXIETY

HEC I 2017
English
Elimination Tool:

A) Problem
B) Worry
C) Relax
D) Nervous

Choose the word most similar in meaning to the given.

UNFOLD

HEC I 2017
English
Elimination Tool:

A) Conceal
B) Withhold
C) Maintain
D) Elaborate

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

This is the house where Jack was born in.

HEC I 2017
English
Elimination Tool:

A) Is
B) Where
C) Was
D) In

Pick up the wrong one:

The beautiful and the most attractive picture was hanged on the wall.

HEC I 2017
English
Elimination Tool:

A) Beautiful
B) The most
C) Was
D) Hanged

The sentence which has one dependent and one independent class is called?

HEC I 2017
English
Elimination Tool:

A) Compound Sentence
B) Complex Sentence
C) Compound Complex Sentence
D) Exclamatory Sentence

Choose the word nearly opposite in meaning to the given word.

FORTH

HEC I 2017
English
Elimination Tool:

A) Back
B) Out
C) Into view
D) Onward

Choose the word most similar in meaning to the given:

REAL

HEC I 2017
English
Elimination Tool:

A) Copied
B) Idea
C) Original
D) Given

He invited _____ and Zia to dinner.

HEC I 2017
English
Elimination Tool:

A) We
B) You
C) Us
D) Them

Neither they nor their friend ______ solved the question.

HEC I 2017
English
Elimination Tool:

A) Has
B) Have
C) Was
D) Were

Pick up the wrong one:

Neither Promises have been kept, regardless of numerous opportunities to do so.

HEC I 2017
English
Elimination Tool:

A) Neither
B) Promises
C) Have
D) Regardless

A parallel plate capacitor has a capacitance C. If the distance between the plates and the area between plates both halved. Now the capacitance will be?

HEC I 2017
Physics
Elimination Tool:

A) 0.5C
B) 0.25C
C) 4C
D) C

An object is thrown vertically upward with a velocity of 20 m/s. How much time it will take to reach the highest point?

HEC I 2017
Physics
Elimination Tool:

A) 2 sec
B) 4 sec
C) 1 sec
D) Insufficient information

The dimension of Young’s Modulus is:

HEC I 2017
Physics
Elimination Tool:

A) M2L-1T2
B) ML-1T-1
C) ML-1T-2
D) ML-2T-2

The length and width of a rectangular plate are measured to be 15.3 mm and 12.50 mm. Find the area of plate upto appropriate number of significant figures:

HEC I 2017
Physics
Elimination Tool:

A) 195.84mm²
B) 195.8mm²
C) 196mm²
D) 200mm²

A frictionless heat engine can be 100% if:

HEC I 2017
Physics
Elimination Tool:

A) The temperature of the sink is 0°C.
B) The temperature of the sink is 0 K.
C) The temperature of the source is 0.
D) The temperature of the sink is equal to the temperature of the source.

A vector in space has _____ dimension:

HEC I 2017
Physics
Elimination Tool:

A) Zero
B) 1
C) 2
D) 3

A fuse can be a saviour against:

HEC I 2017
Physics
Elimination Tool:

A) High voltage
B) High current
C) High power
D) Heating of wires

Wheatstone Bridge is used to:

HEC I 2017
Physics
Elimination Tool:

A) Compare resistances
B) Determine the current
C) Determine the charge
D) Determine the e.m.f

Which of the following statement is true about energy in a quantum?

HEC I 2017
Physics
Elimination Tool:

A) It varies directly with frequency.
B) It is the same at all frequencies.
C) It varies with frequency.
D) None.

A force F = 0.12 N is applied to a spring and the spring elongates by 3 cm. The specific constant of the spring is?

HEC I 2017
Physics
Elimination Tool:

A) 0.4 Nm-2
B) 40 Nm-1
C) 400 Nm-1
D) 4 Nm-1

In ripple tank, 40 waves pass through a certain point in one second. If distance between two consecutive in phase points of the waves is 5 cm. Then, find the speed of wave.

HEC I 2017
Physics
Elimination Tool:

A) 2.7 ms-1
B) 3 ms-1
C) 200 ms-1
D) 2 ms-1

A body will be in translational equilibrium if the vector sum of all the forces acting on it is:

HEC I 2017
Physics
Elimination Tool:

A) Zero
B) Min
C) Max
D) Equal

Suppose you drop an object from the roof of your house. It takes 2 seconds to reach the ground. What is the height of your house?

HEC I 2017
Physics
Elimination Tool:

A) 10m
B) 20m
C) 5m
D) Insufficient information

One wheel has a diameter of 30 inches and a second wheel has a diameter of 20 inches. The first wheel trabelsa certain distacne revolution in 240 revolutions. In how many revolutions did the second wheel travel the same distance?

HEC I 2017
Physics
Elimination Tool:

A) 170
B) 160
C) 360
D) 420

An alternate unit to kgms-1 is :

HEC I 2017
Physics
Elimination Tool:

A) N
B) Nm2
C) Nm
D) Ns

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

HEC I 2017
Physics
Elimination Tool:

A) When it is heated.
B) When it is subjected to high pressure.
C) When it interacts with another particle.
D) Spontaneously.

Lower fixed point of Celcius scale:

HEC I 2017
Physics
Elimination Tool:

A) 32°C
B) 100°C
C) 273°C
D) 0°C

Change in entropy doesn’t depend on:

HEC I 2017
Physics
Elimination Tool:

A) Amount of heat added to the system
B) Amount of heat rejected from the system
C) Temperature of the substance
D) Amount of the substance

The question is as follows:

What should be the correct answer?

HEC I 2017
Physics
Elimination Tool:

A) ĵ
B) -ĵ
C) k̂
D) -k

Dark plastic handlers often used on kitchen utensils because:

HEC I 2017
Physics
Elimination Tool:

A) The black material is good in radiation.
B) The plastic is good insulator.
C) The plastic is a good conductor.
D) The plastic soften gradually with excessive heat.

Volume stress divided by volume strain equal to:

HEC I 2017
Physics
Elimination Tool:

A) Young’s modulus
B) Bulk modulus
C) Shear modulus
D) Hyper modulus

In rotator motion angular momentum plays a role which is analogous to that played by _____ in linear mLinear velocity is analogous to rotational velocity in rotational motion. Linear velocity is analogous to rotational velocity in rotational motion. votion.

HEC I 2017
Physics
Elimination Tool:

A) Linear velocity
B) Linear momentum
C) Linear acceleration
D) Inertia

In Young’s Double slit experiment, if the spacing between the slit is doubled and the linear distance form the screen is recued to one half then the spacing between the two adjacent bright fringes will be _____ of actual value.

HEC I 2017
Physics
Elimination Tool:

A) Remain same
B) Reduce to one half
C) Reduce to one quarter
D) Increase to twice

Consider an object is placed on a frictionless inclined plane at a height of 5m, if it is released, what will be its velocity at the bottom of the inclined plane?

HEC I 2017
Physics
Elimination Tool:

A) Insufficient information
B) 10 m/s
C) 100 m/s
D) 20 m/s

A guy is standing in a lift falling freely under gravity releases a ball from hand. As seen by the ball, the boy:

HEC I 2017
Physics
Elimination Tool:

A) Falls down
B) Remains stationary
C) Goes up
D) None of above

The object at equilibrium may have any:

HEC I 2017
Physics
Elimination Tool:

A) Force acting upon it
B) Acceleration
C) Velocity
D) Torque acting upon it

A body moving with velocity v can be stopped by a force F in direction of it. Same body moving with velocity 5v can be stopped by a force 5F in distance equal to:

HEC I 2017
Physics
Elimination Tool:

A) X
B) 5X
C) 10X
D) X/2

A factor buys 100 kg of radioactive chemical witha half life of 5 years which decays to a stable compound. How much of the chemical will still be radioactive in 10 years time?

HEC I 2017
Physics
Elimination Tool:

A) None
B) 25 kg
C) 75 kg
D) 50 kg

A cricketer hits 4 runs, when middle of the bat hits the ball. This is an example of Newton’s:

HEC I 2017
Physics
Elimination Tool:

A) 2nd law of motion
B) 3rd law of motion
C) 1st law of motion
D) Law of gravity

A current of 2A is passing through an inductor of 2mH. Energy stored by it is:

HEC I 2017
Physics
Elimination Tool:

A) 8 mJ
B) 10 mJ
C) 6 mJ
D) 4 mJ