VITEEE PCBE Mock Test - 15


125 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE PCBE Mock Test - 15


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This mock test of VITEEE PCBE Mock Test - 15 for JEE helps you for every JEE entrance exam. This contains 125 Multiple Choice Questions for JEE VITEEE PCBE Mock Test - 15 (mcq) to study with solutions a complete question bank. The solved questions answers in this VITEEE PCBE Mock Test - 15 quiz give you a good mix of easy questions and tough questions. JEE students definitely take this VITEEE PCBE Mock Test - 15 exercise for a better result in the exam. You can find other VITEEE PCBE Mock Test - 15 extra questions, long questions & short questions for JEE on EduRev as well by searching above.
QUESTION: 1

Numerous vascular bundles occur scattered in the ground tissue of

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QUESTION: 2

Bee dances occur because of

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QUESTION: 3

The drug Santonin is obtained from the flowers of

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QUESTION: 4
Radioactive entities are used to trace certain macromolecules. If radioactive aminoacid is used which organelle it will be traced in
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QUESTION: 5
Hardness to the cell wall is provided by
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QUESTION: 6
Who discovered the cell (actually the cell wall) in section of cork ?
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QUESTION: 7
Joining of repeating units to form a macromolecules is called
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QUESTION: 8
Which of the following would occur as a result of the oval opening in the heart remaining open after birth?
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QUESTION: 9
Which one is inverted pyramid?
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QUESTION: 10
Which one is vestigial in humans
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QUESTION: 11
Dinsaurs were dominant during
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QUESTION: 12
A vestigial organ in man is
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QUESTION: 13
Which of the following causes point mutation
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QUESTION: 14
Flow of information during translation is
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QUESTION: 15
Which of the following pairs is correctly matched with regard to the codon and the amino acid coded by it ?
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QUESTION: 16
When one gene hides the effect of another gene, the interaction factor is known as :
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QUESTION: 17
In a cross between a pure tall pea plant with green pos and a pure short plant with yellow pod, how many short plants out of 16 you would expect in F₂ generation?
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QUESTION: 18
In sex-linked traits the males are
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QUESTION: 19
Huntington's chorea is characterised by
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QUESTION: 20
Suspension of attenuated pathogen that stimulates antibody formation is
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QUESTION: 21
Immune deficiency syndrome could develop due to
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QUESTION: 22
AIDS spreads due to
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QUESTION: 23
Which of the following is a wrong statement?
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QUESTION: 24
Inflorescence of family compositae is
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QUESTION: 25
The prickly pear plant which is botanically named as Opuntia ia an excellent example of
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QUESTION: 26
Algae often float on surface of water during day but sink down during night due to
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QUESTION: 27
Which one of the following substances plays an important role in biochemical defence of host plants?
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QUESTION: 28
Biogas is produced by anaerobic fermentation of dung and other forms of plant and animal wastes. It consists of
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QUESTION: 29
Which one is living and non-nucleated at maturity ?
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QUESTION: 30
Lead concentration of blood is considered alarming at
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QUESTION: 31
Nitrogen oxides formed during emission from automobiles and power plants are a source of fine air partilces which lead to
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QUESTION: 32
NEERI is at
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QUESTION: 33
Trypanosoma brucei causes :
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QUESTION: 34
The site of testosterone production in the cytoplasm of an interstitial cell is the
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QUESTION: 35
More energy is produced from 1 g of
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QUESTION: 36
Most important theory of genral biology was proposed by
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QUESTION: 37
"Human population grows in geometric ratio while food materials increase in arithemetic proportion." It is a statement from
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QUESTION: 38
Darwin's theory of Natural Selection fails to explain
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QUESTION: 39
Production of urea occurs in the
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QUESTION: 40
Aldosterone is secreted by the
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QUESTION: 41

A stepdown transformer is connected to main supply 200 V to operate a 6V, 30W bulb. The current in primary is

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QUESTION: 42

The closest distance of approach of an α - particle travelling with a velocity 'V' to a certain nucleus is 'x'. The distance of closest approach of α - particle travelling with a velocity 3V to the same nucleus is

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QUESTION: 43

Moseley's law states that

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The frequency of characteristic X-ray spectral line is directly proportional to the square of atomic number of target element.
⇒ v ∝ Z2 i . e . √v ∝ Z
o r √v = a (z − b )
Here a is constant of proportionality b is screening constant.

QUESTION: 44

An air capacitor of capacity C = 10μ F is connected to a constant voltage battery of 12 volt. Now the space between the plates is filled with a liquid of dielectric constant 5. The charge that flows now from battery to the capacitor is

Solution:

C = 10 μ F
Charge in capacitor q = CV
= 10 x 12
= 120 μ C
On keeping liquid of dielectric constant5, capacity will becomes of 5 time.
∴ Charge q = 5 x 120
= 600 μ C

QUESTION: 45

In connection with chemical effect of current, Faraday constant is equal to

Solution:

E ∝ z or E = Fz or F = E/z
Where E = chemical equivalent
z = electrochemical equivalent

QUESTION: 46

In short wave communication waves of which of the following frequencies will be reflected back by the ionospheric layer having electron density 1011 per m-3?

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QUESTION: 47

An electric motor operates on a d.c. source of e.m.f. V and internal resistance R. The power output of the source is maximum when the current drawn by the motor is

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QUESTION: 48

Which of the following does not obey the ohm's law?

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QUESTION: 49

The electrical resistance of a mercury column in a cylindrical container is R. When the same mercury is poured into another cylindrical container twice the radius of cross-section, the resistance of mercury column now is

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QUESTION: 50

Two wires of the same material are given. The first wire is twice as long as the second and has twice the diameter of the second. The resistance of the first will be

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QUESTION: 51

Uncertainty in position of the electron is of the order of de-Broglie wavelength. Making use of Heisenberg's uncertainty principle, it will be found that uncertainty in velocity ν is of the order of

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QUESTION: 52

In a D.C. motor induced e.m.f will be maximum

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QUESTION: 53

In a pure inductive circuit with a.c. source, the current lags behind e.m.f. by

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QUESTION: 54

When the no. of turns in a coil is triplled, without any change in the length of coil, its self-inductance becomes

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QUESTION: 55

The electromagnetic waves travel with a velocity

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QUESTION: 56

A point charge q is placed at a distance a/2 directly above the centre of a square of side a. The electric flux through the square assuming it to be one face of the cube is

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QUESTION: 57

Equal charges are given to two conducting spheres of different radii. The potential will

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QUESTION: 58

Potential energy of two equal positive charges 1 μ C each held 1 m apart in air is

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QUESTION: 59

The electric field inside a sphere which carries a charge density proportional to the distance from the origin ρ = αr (α is a constant) is

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QUESTION: 60

Two capacitors of capacitances 3 μF and 6 μF are charged to a potential of 12 V each. They are now connected to each other, with the positive plate of each joined to the negative plate of the other. The potential difference across each capacitor will be

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QUESTION: 61

Figure shows two large cylindrical shells having uniform linear charge densities + λ and - λ . Radius of inner aylinder is 'a' and that of outer cylinder is 'b'. A charged particle of mass m , charge q revolves in a circle of radius r. Then its speed 'V' is:
[Neglect gravity and assume the radii of both cylinders to be very small in comparison to their length]

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QUESTION: 62

A current of 2 ampere flows in a long, straight wire of radius 2 mm. The intensity of magnetic field at the axis of the wire is

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QUESTION: 63

In a radioactive disintegration, the ratio of initial number of atoms to the number of atoms present at an instant of time equal to its mean life is

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QUESTION: 64

A heavy nucleus at rest breaks into two fragments which fly off with velocities 8:1. The ratio of radii of the fragments is

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QUESTION: 65

A nuclear reactor has a power of 16 Kw. If the energy per fission is 200 MeV, the number of fissions per second is

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QUESTION: 66

The slope of frequency of incident light and stopping potential for a given surface will be

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QUESTION: 67

Light of wavelength 5000 Å falls on a sensitive plate with photoelectric work function of 1.9 eV. The kinetic energy of the photoelectron emitted will be

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QUESTION: 68

A person using a lens as a simple microscope sees an

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QUESTION: 69

If convex lens of focal length 80 cm and a concave lens of focal length 50 cm are combined together, what will be their resulting power?

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QUESTION: 70

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

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QUESTION: 71

If the two ends p and n of a p-n diode junction are joined by a wire

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QUESTION: 72

When the forward bias voltage increases what happens to the potential barrier.

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QUESTION: 73

In p-type semiconductor, majority current carriers are

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QUESTION: 74

A P-type semiconductor can be obtained by adding

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QUESTION: 75

In p-type semiconductor the majority charge carriers are

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QUESTION: 76

Electronic configuration of germanium is 2, 8, 18 and 4. To make it extrinsic semiconductor small quantity of antinomy is added

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QUESTION: 77

A ray of light falls on a transparent glass slab of refractive index 1.62. If the reflected ray and the refracted ray are mutually perpendicular, the angle of incidence is

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QUESTION: 78

An astronout is looking on earth's surface from a sapce shuttle at an altitude of 500 km. Assuming that the astronaut's pupils' diameter is 5 mm and the wavelength of visible light is 500 nm, the astronaut will be able to resolve linear objects of the size of about

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QUESTION: 79

Which of the following phenomena establish the wave nature of light?

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QUESTION: 80

Two slits, 4 mm apart, are illuminated by light of wavelength 6000 Å. What will be the fringe width on a screen placed 2 m from the slits?

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QUESTION: 81

When 3,3-Dimethyl-2-butanol is heated with H₂SO₄, the major product obtained is

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QUESTION: 82

Reduction of aldehyde with hydroiodic acid gives

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QUESTION: 83

Schiff's reagent is

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QUESTION: 84

In aldehydes and ketones, carbon of the carbonyl group is

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QUESTION: 85

An alkane C7H16 is produced by the reaction of Lithium di (3-pentyl) cuperate with ethyl bromide. The structural formula of product is

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QUESTION: 86

1-Butene may be converted to butane by reaction with

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QUESTION: 87

Complete combustion of 0.858 g of compound X gives 2.63 g of CO₂ and 1.28 g of H₂O. The lowest molecular mass X can have

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QUESTION: 88

Which law directly explains the law of conservation of mass?

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QUESTION: 89

Enzymes

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QUESTION: 90

Element found in plant systems which forms an important constituent of photosynthesis is

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QUESTION: 91

Alpha-Tocopherol is found in

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QUESTION: 92

Methyl acetate will be obtained by reacting CH₃OH with

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QUESTION: 93

Hydrolytic reaction of fats by caustic soda is known as

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QUESTION: 94

Sulphonation of benzoic acid produces mainly

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QUESTION: 95

A and B are gaseous substances which react reversibly to give two gaseous substances C and D,accompanied by the liberation of heat.When the reaction reaches equilibrium,it is observed that Kp = Kc.The equilibrium cannot be disturbed by

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QUESTION: 96

The facor which changes equilibrium constant of the reaction A₂(g) + B₂(g) → 2AB(g) is

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QUESTION: 97

A particular reaction has a negative value for the free energy change. Then at ordinary temperature

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QUESTION: 98

The difference between ΔH and ΔE for the combustion of methane at 27oC will be (in J mol-1)

Solution:

CH4(g) + 2O2 → CO2(g) + 2H2O(l)
Δn = 1 - 3 = (-2)
∴ ΔH - ΔE = Δng RT = (-2) (8.314) (300)

QUESTION: 99

Which of the following compounds is aspirin?

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QUESTION: 100

Which of the following is an isomers of propanal ?

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QUESTION: 101

A similarity between optical and geometrical isomerism is that

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QUESTION: 102

(NH₄)₂SO₄.FeSO₄.6H₂O is

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QUESTION: 103

Alkyl cyanides are

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QUESTION: 104

Hinsberg reagent is

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QUESTION: 105

The art of electroplating was given by

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QUESTION: 106

An electrochemical cell reaction is : Pt, H₂(1atm) ∣ HCl(0.1M)∣∣ CH₃COOH (0.1M)∣ H₂ (1atm), Pt. The e.m.f. of this cell will not be zero, because

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QUESTION: 107

In the electrochemical cell Pt, H2 (g) 1 atm ∕ H+ I M ∕ Cu2+  (1M)  ∕ Cu(s). Which one of the following statements is true?

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QUESTION: 108

The ether that undergoes electrophilic substitution reactions is

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QUESTION: 109

Chromium is obtained by reducing purified chromite ore with

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QUESTION: 110

For an ideal gas, number of moles per litre in terms of its pressure P, gas contant R and temperature T is

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QUESTION: 111

The element that does not form a monoxide is

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QUESTION: 112

The electronic configuration of an element is 1s₂2s₂2p₆3s₂3p₆3d₁₀4s₂4p₃. Its properties would be similar to which of the following elements?

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QUESTION: 113

Which of the following oxides of Nitrogen is anhydride of HNO3

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QUESTION: 114

In which of the following complexes, oxidation state of metal is zero ?

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QUESTION: 115

Which of the following describes the hexagonal close packed arrangement of spheres?

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QUESTION: 116

Which forms meso form on reaction with alkaline KMnO4?

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QUESTION: 117

Which of the following is true about a catalyst?

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QUESTION: 118

Mercury is the only metal which is liquid at 0oC. This is due to its

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QUESTION: 119

The nature of an aqueous solution of FeCl₃ is

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QUESTION: 120

The standard enthalpy of decomposition of N₂O₄ to NO₂ is 58.04 KJ and standard entropy of this reaction is 176.7 J-K-1. The standard free energy change for this reaction at 25oC, is

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QUESTION: 121

Find the Antonym of PRECIPITATE

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QUESTION: 122

Fill in the blank with appropriate word.
Some regions of our country still remain........to the average man.

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QUESTION: 123

Find the synonym of BROWSE

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QUESTION: 124

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

Many people CALLED ON the minister when he was ill.

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QUESTION: 125

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

He is not IN THE GOOD BOOKS of his master.

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