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VITEEE PCBE Mock Test - 15


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

VITEEE PCBE Mock Test - 15 for JEE 2023 is part of VITEEE: Subject Wise and Full Length MOCK Tests preparation. The VITEEE PCBE Mock Test - 15 questions and answers have been prepared according to the JEE exam syllabus.The VITEEE PCBE Mock Test - 15 MCQs are made for JEE 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for VITEEE PCBE Mock Test - 15 below.
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VITEEE PCBE Mock Test - 15 - Question 1

Numerous vascular bundles occur scattered in the ground tissue of

VITEEE PCBE Mock Test - 15 - Question 2

Bee dances occur because of

VITEEE PCBE Mock Test - 15 - Question 3

The drug Santonin is obtained from the flowers of

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

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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 43

Moseley's law states that

Detailed Solution for VITEEE PCBE Mock Test - 15 - Question 43

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.

VITEEE PCBE Mock Test - 15 - 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

Detailed Solution for VITEEE PCBE Mock Test - 15 - Question 44

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

VITEEE PCBE Mock Test - 15 - Question 45

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

Detailed Solution for VITEEE PCBE Mock Test - 15 - Question 45

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

VITEEE PCBE Mock Test - 15 - 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?

Detailed Solution for VITEEE PCBE Mock Test - 15 - Question 46

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 48

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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 52

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

VITEEE PCBE Mock Test - 15 - Question 53

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

VITEEE PCBE Mock Test - 15 - Question 54

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

VITEEE PCBE Mock Test - 15 - Question 55

The electromagnetic waves travel with a velocity

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 57

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

VITEEE PCBE Mock Test - 15 - Question 58

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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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]

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 66

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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 68

A person using a lens as a simple microscope sees an

VITEEE PCBE Mock Test - 15 - 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?

VITEEE PCBE Mock Test - 15 - Question 70

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

VITEEE PCBE Mock Test - 15 - Question 71

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

VITEEE PCBE Mock Test - 15 - Question 72

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

VITEEE PCBE Mock Test - 15 - Question 73

In p-type semiconductor, majority current carriers are

VITEEE PCBE Mock Test - 15 - Question 74

A P-type semiconductor can be obtained by adding

VITEEE PCBE Mock Test - 15 - Question 75

In p-type semiconductor the majority charge carriers are

VITEEE PCBE Mock Test - 15 - Question 76

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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 79

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

VITEEE PCBE Mock Test - 15 - 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?

VITEEE PCBE Mock Test - 15 - Question 81

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

VITEEE PCBE Mock Test - 15 - Question 82

Reduction of aldehyde with hydroiodic acid gives

VITEEE PCBE Mock Test - 15 - Question 83

Schiff's reagent is

VITEEE PCBE Mock Test - 15 - Question 84

In aldehydes and ketones, carbon of the carbonyl group is

VITEEE PCBE Mock Test - 15 - 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

Detailed Solution for VITEEE PCBE Mock Test - 15 - Question 85

VITEEE PCBE Mock Test - 15 - Question 86

1-Butene may be converted to butane by reaction with

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 88

Which law directly explains the law of conservation of mass?

VITEEE PCBE Mock Test - 15 - Question 89

Enzymes

VITEEE PCBE Mock Test - 15 - Question 90

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

VITEEE PCBE Mock Test - 15 - Question 91

Alpha-Tocopherol is found in

VITEEE PCBE Mock Test - 15 - Question 92

Methyl acetate will be obtained by reacting CH₃OH with

VITEEE PCBE Mock Test - 15 - Question 93

Hydrolytic reaction of fats by caustic soda is known as

VITEEE PCBE Mock Test - 15 - Question 94

Sulphonation of benzoic acid produces mainly

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 96

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

VITEEE PCBE Mock Test - 15 - Question 97

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

VITEEE PCBE Mock Test - 15 - Question 98

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

Detailed Solution for VITEEE PCBE Mock Test - 15 - Question 98

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

VITEEE PCBE Mock Test - 15 - Question 99

Which of the following compounds is aspirin?

VITEEE PCBE Mock Test - 15 - Question 100

Which of the following is an isomers of propanal ?

VITEEE PCBE Mock Test - 15 - Question 101

A similarity between optical and geometrical isomerism is that

VITEEE PCBE Mock Test - 15 - Question 102

(NH₄)₂SO₄.FeSO₄.6H₂O is

VITEEE PCBE Mock Test - 15 - Question 103

Alkyl cyanides are

VITEEE PCBE Mock Test - 15 - Question 104

Hinsberg reagent is

VITEEE PCBE Mock Test - 15 - Question 105

The art of electroplating was given by

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - 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?

VITEEE PCBE Mock Test - 15 - Question 108

The ether that undergoes electrophilic substitution reactions is

VITEEE PCBE Mock Test - 15 - Question 109

Chromium is obtained by reducing purified chromite ore with

VITEEE PCBE Mock Test - 15 - Question 110

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

VITEEE PCBE Mock Test - 15 - Question 111

The element that does not form a monoxide is

VITEEE PCBE Mock Test - 15 - Question 112

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

VITEEE PCBE Mock Test - 15 - Question 113

Which of the following oxides of Nitrogen is anhydride of HNO3

VITEEE PCBE Mock Test - 15 - Question 114

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

VITEEE PCBE Mock Test - 15 - Question 115

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

VITEEE PCBE Mock Test - 15 - Question 116

Which forms meso form on reaction with alkaline KMnO4?

VITEEE PCBE Mock Test - 15 - Question 117

Which of the following is true about a catalyst?

VITEEE PCBE Mock Test - 15 - Question 118

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

VITEEE PCBE Mock Test - 15 - Question 119

The nature of an aqueous solution of FeCl₃ is

VITEEE PCBE Mock Test - 15 - 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

VITEEE PCBE Mock Test - 15 - Question 121

Find the Antonym of PRECIPITATE

VITEEE PCBE Mock Test - 15 - Question 122

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

VITEEE PCBE Mock Test - 15 - Question 123

Find the synonym of BROWSE

VITEEE PCBE Mock Test - 15 - 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.

VITEEE PCBE Mock Test - 15 - 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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