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VITEEE PCBE Mock Test - 12


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

VITEEE PCBE Mock Test - 12 for JEE 2023 is part of VITEEE: Subject Wise and Full Length MOCK Tests preparation. The VITEEE PCBE Mock Test - 12 questions and answers have been prepared according to the JEE exam syllabus.The VITEEE PCBE Mock Test - 12 MCQs are made for JEE 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for VITEEE PCBE Mock Test - 12 below.
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VITEEE PCBE Mock Test - 12 - Question 1

Largest number of chloroplasts in the leaf is in

VITEEE PCBE Mock Test - 12 - Question 2

Tassar silk is extracted from

VITEEE PCBE Mock Test - 12 - Question 3

Glycolysis can not occur in the absence of

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

Choke coil works on the principle of

VITEEE PCBE Mock Test - 12 - Question 42

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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 44

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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 50

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

VITEEE PCBE Mock Test - 12 - Question 51

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

VITEEE PCBE Mock Test - 12 - Question 52

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

Detailed Solution for VITEEE PCBE Mock Test - 12 - Question 52

E = 1/2 LI2

VITEEE PCBE Mock Test - 12 - Question 53

What is increased in a step-down transformer

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 55

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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

Detailed Solution for VITEEE PCBE Mock Test - 12 - Question 57

W = QV
∴ V = W/Q = 2/20 = 0.1 volt

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 62

The magnetic field near a current carrying conductor is given by

VITEEE PCBE Mock Test - 12 - Question 63

Cadmium rods are used in a nuclear reactor

VITEEE PCBE Mock Test - 12 - Question 64

What is the particle x in the following nuclear reaction?

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 66

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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 68

The work function of oxide coated tungsten emitter will be

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 71

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

VITEEE PCBE Mock Test - 12 - Question 72

Which one of the following is an incorrect statement?

VITEEE PCBE Mock Test - 12 - Question 73

The most commonly used material for making transistor is

VITEEE PCBE Mock Test - 12 - Question 74

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

VITEEE PCBE Mock Test - 12 - Question 75

At zero degree Kelvin a piece of germanium

VITEEE PCBE Mock Test - 12 - Question 76

In p-type semiconductor

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 78

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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 81

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

VITEEE PCBE Mock Test - 12 - Question 82

Which of the following will respond to Cannizzaro's reaction

VITEEE PCBE Mock Test - 12 - Question 83

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

VITEEE PCBE Mock Test - 12 - Question 84

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

VITEEE PCBE Mock Test - 12 - Question 85

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

Detailed Solution for VITEEE PCBE Mock Test - 12 - Question 85

VITEEE PCBE Mock Test - 12 - Question 86

1, 3-Butadiene when treated with Br₂ gives

VITEEE PCBE Mock Test - 12 - Question 87

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

VITEEE PCBE Mock Test - 12 - Question 88

Which is correct statement about proton?

VITEEE PCBE Mock Test - 12 - Question 89

The reason for double helical structure of DNA is operation of

VITEEE PCBE Mock Test - 12 - Question 90

A nucleotide consists of

VITEEE PCBE Mock Test - 12 - Question 91

Which has maximum protein content?

VITEEE PCBE Mock Test - 12 - Question 92

In the above sequence of reactions, A and B are

VITEEE PCBE Mock Test - 12 - Question 93

An alkyl cyanide forms an amide when it is treated with

VITEEE PCBE Mock Test - 12 - Question 94

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

Detailed Solution for VITEEE PCBE Mock Test - 12 - Question 94

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

VITEEE PCBE Mock Test - 12 - Question 95

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

VITEEE PCBE Mock Test - 12 - Question 96

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

VITEEE PCBE Mock Test - 12 - 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?

Detailed Solution for VITEEE PCBE Mock Test - 12 - Question 97

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

VITEEE PCBE Mock Test - 12 - 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

VITEEE PCBE Mock Test - 12 - Question 99

An example of anthraquinone dye is

VITEEE PCBE Mock Test - 12 - Question 100

The heat of neutralisation is maximum when

Detailed Solution for VITEEE PCBE Mock Test - 12 - Question 100

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.

VITEEE PCBE Mock Test - 12 - Question 101

IUPAC name of 

VITEEE PCBE Mock Test - 12 - Question 102

Which one of the following has tetrahedral geometry?

VITEEE PCBE Mock Test - 12 - Question 103

Which of the following compounds shows optical isomerism?

VITEEE PCBE Mock Test - 12 - Question 104

In the electrolysis of dilute H₂SO₄ using platinum electrode

VITEEE PCBE Mock Test - 12 - Question 105

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

VITEEE PCBE Mock Test - 12 - Question 106

Acetaldoxime reacts with P₂O₅ to give

VITEEE PCBE Mock Test - 12 - Question 107

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

VITEEE PCBE Mock Test - 12 - 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

Detailed Solution for VITEEE PCBE Mock Test - 12 - Question 108

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

VITEEE PCBE Mock Test - 12 - Question 109

The substance used as a smoke screen in warfare is

VITEEE PCBE Mock Test - 12 - Question 110

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

VITEEE PCBE Mock Test - 12 - Question 111

Which one of the following compounds does not exist ?

VITEEE PCBE Mock Test - 12 - Question 112

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

VITEEE PCBE Mock Test - 12 - Question 113

Which one of the following elements is most metallic?

VITEEE PCBE Mock Test - 12 - Question 114

Cupellation process is used in the metallurgy of

VITEEE PCBE Mock Test - 12 - Question 115

The oxidation number of carbon in CH₂O is

VITEEE PCBE Mock Test - 12 - Question 116

Stainless steel contains

VITEEE PCBE Mock Test - 12 - Question 117

Bragg's law is given by equation

VITEEE PCBE Mock Test - 12 - Question 118

In the case of autocatalysis

VITEEE PCBE Mock Test - 12 - Question 119

Which of following pair represent diastereomers?

VITEEE PCBE Mock Test - 12 - Question 120

Reaction of zinc with cold and very dil. HNO₃ gives

VITEEE PCBE Mock Test - 12 - Question 121

Find the antonym of BOISTEROUS.

VITEEE PCBE Mock Test - 12 - Question 122

Find the Synonym of COMBAT

VITEEE PCBE Mock Test - 12 - 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.

VITEEE PCBE Mock Test - 12 - 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.

VITEEE PCBE Mock Test - 12 - 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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