VITEEE PCBE Mock Test - 12


125 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE PCBE Mock Test - 12


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This mock test of VITEEE PCBE Mock Test - 12 for JEE helps you for every JEE entrance exam. This contains 125 Multiple Choice Questions for JEE VITEEE PCBE Mock Test - 12 (mcq) to study with solutions a complete question bank. The solved questions answers in this VITEEE PCBE Mock Test - 12 quiz give you a good mix of easy questions and tough questions. JEE students definitely take this VITEEE PCBE Mock Test - 12 exercise for a better result in the exam. You can find other VITEEE PCBE Mock Test - 12 extra questions, long questions & short questions for JEE on EduRev as well by searching above.
QUESTION: 1

Largest number of chloroplasts in the leaf is in

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QUESTION: 2

Tassar silk is extracted from

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QUESTION: 3

Glycolysis can not occur in the absence of

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QUESTION: 4
Based on its function, the heart is often referred to as a “double pump”. Which of the following would explain this?
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QUESTION: 5
One of the following is native to West Asia
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QUESTION: 6
Chloroplasts are self replicating units as they possess
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QUESTION: 7
Autolysis is connected with which one of the following organelle?
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QUESTION: 8
Carboniferous period of coal deposition was
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QUESTION: 9
Experiments on Acetabularia by Hammerling proved the role of
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QUESTION: 10
In comparative study of grassland and pond ecosystems
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QUESTION: 11
Evolution of a species or group can be studied through
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QUESTION: 12
The earliest fossil form in the phylogeny of horse is
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QUESTION: 13
Khorana et al synthesised RNA with copolymer of UGUGUGUGUG... It produced a peptide with alternate cysteine and valine. The codons for the two are
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QUESTION: 14
Coded information in nucleic acid depends upon
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QUESTION: 15
Meselson and Stahl proved by their experiment about DNA, that it has
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QUESTION: 16
Main reason for success of Mendel was
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QUESTION: 17
In a certain plant, red colour flower (R) is dominant over white colour flower (r). when a heterozygous Rr plant is selfed, 64 offsprings are obtained. The number of white offsprings are
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QUESTION: 18
A human male has one one barr body in his somatic cell nuclei. The chromosome constitution must be
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QUESTION: 19
Cornea transplantation has become common due to
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QUESTION: 20
Which would result in haemolysis in foetus ?
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QUESTION: 21
Organ transplant rejection is prevented by
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QUESTION: 22
T.T and TAB second booster dose is give at the age of
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QUESTION: 23
Basal placentation is found in
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QUESTION: 24
Which type of meristem is an example of vascular cambium of the root ?
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QUESTION: 25
Which of the following root system provides support and storage?
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QUESTION: 26
Formation of ATP in photosynthesis and respiration is an oxidation process which utilises the energy from
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QUESTION: 27
In which one of the following pathogens do the cells of promycelium after the germination of teleutospore produce infection hyphae instead of basidiospores?
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QUESTION: 28
Biofertilisers include
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QUESTION: 29
Which one does not occur in xylem
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QUESTION: 30
Green muffler is related to pollution of
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QUESTION: 31
Atmospheric content of CO₂ is
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QUESTION: 32
Intensity of sound in normal conversation is
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QUESTION: 33
'Maurer's dots' are found in the :
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QUESTION: 34
Chemical messengers belong to four main molecular classes. Progesterone is a(n)
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QUESTION: 35
Flightless bird, Cassowary is found in
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QUESTION: 36
Neo-Darwinism believes that new species develop through
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QUESTION: 37
Filtrate enters the Bowman’s capsule by
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QUESTION: 38
Gene frequency in a population remains stable unless and untill there is
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QUESTION: 39
The use and disuse principle of evolution or theory of "inheritance of acquired characters" was proposed by
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QUESTION: 40
Which substance would normally be found in higher concentration in urine than in blood?
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QUESTION: 41

Choke coil works on the principle of

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QUESTION: 42

In the Bohr model of the hydrogen atom, the lowest orbit corresponds to

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QUESTION: 43

A 2μ F capacitor is charged to 100 volt and then its plates are connected by a conducting wire. The heat produced is

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QUESTION: 44

The force experienced by the cathode rays when they pass through an electric field of intensity E is

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QUESTION: 45

A steady current of 1.5 A flows through a copper voltameter for 10 min. If the electrochemical equivalent of copper is 30x10-5 g C-1 , the mass of copper deposited on the electrode will be

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QUESTION: 46

If sky wave with a frequency of 50 MHz is incident on D-region at an angle of 30o, then angle of refraction is

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QUESTION: 47

Two wires of the same metal have same length, but their cross-sectional areas are in the ratio 3 : 1. If resistance of the thicker wire is 10 Ω, then total resistance of the wires in series combination will be

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QUESTION: 48

The number of dry cells, each of e.m.f. 1.5 volt and internal resistance 0.5 ohm that must be joined in series with a resistance of 20 ohm so as to send a current of 0.6 ampere through the circuit is

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QUESTION: 49

Two cells of the same emf are in series with an external resistance R. The internal resistance r1 is greater than r2. The p.d across the first cell is found to be zero. Then the value of R is

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QUESTION: 50

A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A passes through the coil. When it is converted to a 10 A ammeter, the shunt resistance is

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QUESTION: 51

On increaing the number of electrons striking the anode of an X-ray tube, which one of the following parameters of the resulting X-ray would increase

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QUESTION: 52

Energy needed to establish an alternating current I in a coil of self inductance L is

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E = 1/2 LI2

QUESTION: 53

What is increased in a step-down transformer

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QUESTION: 54

When current cahnge from + 2 A to -2 A in 0.05 s, an e.m.f. of 8 V is induced in a coil. The coefficient of self inductance of the coil is

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QUESTION: 55

Which one of the following electromagnetic radiations have the smallest wavelength?

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QUESTION: 56

A sphere S1 of radius r1 encloses a total charge Q. If there is another concentric sphere S1 of radius r2 > r1 and there be no additional charges between S1 and S2, the ratio of electric flux through S1 and S2 is

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QUESTION: 57

On moving a charge of 20 C by 2 cm, 2 joule of work is done, then the potential difference between the points is

Solution:

W = QV
∴ V = W/Q = 2/20 = 0.1 volt

QUESTION: 58

A hollow metal sphere of radious 10 cm is charged such that the potential on its surface is 80V. The potential at the centre of the sphere is

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QUESTION: 59

The capacitor of a parallel plate capacitor with no dielectric substance and a separation of 0.4 cm is 2 μF. The separation is reduced to half and it is filled with a substance of dielectric value 2.8. The new capacity of the capacitor is

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QUESTION: 60

A conducting sphere of radius 10 cm is charged with 10 μC. Another uncharged sphere of radius 20 cm in allowed to touch it for some time. If both the spheres are separated, then surface density of charges on the spheres will be in the ratio of

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QUESTION: 61

The capacity of a condenser 'A' is 10 μ F and it is charged by a battery of 100V. The battery is disconnected and the condenser is connected to a condenser 'B'. The common potential is 40V. The capacity of 'B' is

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QUESTION: 62

The magnetic field near a current carrying conductor is given by

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QUESTION: 63

Cadmium rods are used in a nuclear reactor

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QUESTION: 64

What is the particle x in the following nuclear reaction?

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QUESTION: 65

Two radioactive substances A and B have decay constants 5 λ and λ respectively. At t = 0 they have the same number of nuclei. The ratio of number of nuclei of A to those of B will be (1/e)2 after a time interval

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QUESTION: 66

Which of the following is not dependent on the intensity of incident radiation in a photoelectric experiment ?

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QUESTION: 67

Green light of wavelength 5460 Å is incident on an air glass interface. If refractive index of glass is 1.5, then wavelength of light in glass would be

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QUESTION: 68

The work function of oxide coated tungsten emitter will be

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QUESTION: 69

If a battery is connected across a p - n junction with the p - type to the negative terminal, the junction is said to be

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QUESTION: 70

The angle of a prism is 600 and the angle of minimum deviation of light passing through it is observed to be 400. The angle of incidence of light is

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QUESTION: 71

When n - p - n transistor is used as an amplifier.

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QUESTION: 72

Which one of the following is an incorrect statement?

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QUESTION: 73

The most commonly used material for making transistor is

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QUESTION: 74

Which of the following statement is true about p-type semiconductors?

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QUESTION: 75

At zero degree Kelvin a piece of germanium

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QUESTION: 76

In p-type semiconductor

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QUESTION: 77

If the phase differenc between light waves from two slits of Young's double slit experiment is π radian, then the central fringe will be

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QUESTION: 78

When distance between source of light and observer decreases, then the apparent frequency of light

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QUESTION: 79

In young's double slit experiment, the intensity of central maximum is I. It one slit is closed, the intensity at the same place will become

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QUESTION: 80

Two waves of same frequency, but of amplitudes in the ratio 1:3 are superimposed. The ratio of maximum to minimum intensity is

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QUESTION: 81

Which one of the following will produce a primary alcohol by reacting with CH₃MgI?

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QUESTION: 82

Which of the following will respond to Cannizzaro's reaction

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QUESTION: 83

The cyanohydrin of a compound X on hydrolysis gives lactic acid; The X is

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QUESTION: 84

Which of the following does not turn Schiff's reagent to pink ?

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QUESTION: 85

How many monochlorobutanes will be obtained on chlorination of n-butane?

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QUESTION: 86

1, 3-Butadiene when treated with Br₂ gives

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QUESTION: 87

The reaction CH₃CH₂Br + OH- → CH₃CH₂OH + Br- is an example of;

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QUESTION: 88

Which is correct statement about proton?

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QUESTION: 89

The reason for double helical structure of DNA is operation of

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QUESTION: 90

A nucleotide consists of

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QUESTION: 91

Which has maximum protein content?

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QUESTION: 92

In the above sequence of reactions, A and B are

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QUESTION: 93

An alkyl cyanide forms an amide when it is treated with

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QUESTION: 94

In a reaction involving ring substitution of C6H5Y, the major product is meta isomer. The group Y can be

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Electron withdrawing groups favour meta substitution
- COOH group is metadirecting group

QUESTION: 95

when a catalyst is added to a reversible reaction in equilibrium state, the value of equilibrium constant

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QUESTION: 96

The reaction N₂ + O₂ → 2NO is endothermic . The forward reaction is

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QUESTION: 97

Latent heat of vaporisation of a liquid at 500 K and 1 atm pressure is 10.0 kcal/mol. What will be the change in internal energy (ΔE) of 3 mol of liquid at same temperature?

Solution:

Vaporization of 3 moles of H2O vapors is:
3H2O(l) → 3H2O(g)
Δn = 3 - 0 = 3
Therefore,
ΔU = ΔH - ΔnRT
= (3 x 10) - 3 (0.002) (500) = 27
change in internal energy is:
ΔU = 27 Kcal

QUESTION: 98

The densities of graphite and diamond at 298 K are 2.25 and 3.31 g-cm-3 respectively. If the standard free energy difference (ΔGo)is equal to 1895 J-mol-1, then pressure at which graphite will be transformed into diamond at 298 K is

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QUESTION: 99

An example of anthraquinone dye is

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QUESTION: 100

The heat of neutralisation is maximum when

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The heat of neutralisation of any strong acid (HCl, HNO3, H2SO4) with a strong base (LiOH, NaOH, KOH) is always maximum (57.1 kJ). In case, either the acid or the base or both are weak, the heat of neutralisationis usually less than 57.1 kJ.

QUESTION: 101

IUPAC name of 

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QUESTION: 102

Which one of the following has tetrahedral geometry?

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QUESTION: 103

Which of the following compounds shows optical isomerism?

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QUESTION: 104

In the electrolysis of dilute H₂SO₄ using platinum electrode

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QUESTION: 105

The indicator that is obtained by coupling the diazonium salt of sulphanilic acid with N,N-dimethylaniline is

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QUESTION: 106

Acetaldoxime reacts with P₂O₅ to give

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QUESTION: 107

If specific conductance and conductance of a solution is same, then its cell constant is equal to

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QUESTION: 108

The e.m.f. of a galvanic cell with electrode potentials of Al equal to -1.66 V and that of Mg equal to - 0.54 V is

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E.M.F. can be positive only if oxidation takes place at Mg-electrode. But here the reduction reaction takes place.

QUESTION: 109

The substance used as a smoke screen in warfare is

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QUESTION: 110

A real gas most closely approaches the behaviour of an ideal gas at

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QUESTION: 111

Which one of the following compounds does not exist ?

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QUESTION: 112

Acetic anhydride reacts with diethyl ether in the presence of anhydrous AlCl₃ to give

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QUESTION: 113

Cupellation process is used in the metallurgy of

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QUESTION: 114

Which one of the following elements is most metallic?

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QUESTION: 115

The oxidation number of carbon in CH₂O is

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QUESTION: 116

Stainless steel contains

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QUESTION: 117

Which of following pair represent diastereomers?

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QUESTION: 118

In the case of autocatalysis

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QUESTION: 119

Bragg's law is given by equation

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QUESTION: 120

Reaction of zinc with cold and very dil. HNO₃ gives

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QUESTION: 121

Find the antonym of BOISTEROUS.

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QUESTION: 122

Find the Synonym of COMBAT

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QUESTION: 123

Fill in the blank with appropriate word.
The problems suggested by style as a sign and index of personality may be......from many points of view.

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QUESTION: 124

Out of the given alternatives, choose the one which can be substituted for the given capitalised word.

There is NO LOVE LOST between the two neighbours.

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QUESTION: 125

Improve the sentence by choosing best alternative for capitalised part of the sentence.

Books for the used-book sales should be in good condition AND SHOULD HAVE NO WRITING IN THEM OR BE UNDERLINED.

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