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VITEEE PCBE Mock Test - 14


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125 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE PCBE Mock Test - 14

VITEEE PCBE Mock Test - 14 for JEE 2023 is part of VITEEE: Subject Wise and Full Length MOCK Tests preparation. The VITEEE PCBE Mock Test - 14 questions and answers have been prepared according to the JEE exam syllabus.The VITEEE PCBE Mock Test - 14 MCQs are made for JEE 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for VITEEE PCBE Mock Test - 14 below.
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VITEEE PCBE Mock Test - 14 - Question 1

Hollow trunks in trees lead to

VITEEE PCBE Mock Test - 14 - Question 2

Honey mainly consists of:

VITEEE PCBE Mock Test - 14 - Question 3

A outer covering membrane is absent over

VITEEE PCBE Mock Test - 14 - Question 4
Endoplasmic reticulum remains attached to
VITEEE PCBE Mock Test - 14 - Question 5
What is true ?
VITEEE PCBE Mock Test - 14 - Question 6
Which of the following mineral is found in haemoglobin ?
VITEEE PCBE Mock Test - 14 - Question 7
Saffron is obtained from
VITEEE PCBE Mock Test - 14 - Question 8
Outer and inner membranes of mitochondria are
VITEEE PCBE Mock Test - 14 - Question 9
Which of the following pairs is a sedimentary type of biogeochemical cycle?
VITEEE PCBE Mock Test - 14 - Question 10
Interacting populations are
VITEEE PCBE Mock Test - 14 - Question 11
A set of homologous organs is
VITEEE PCBE Mock Test - 14 - Question 12
Animals of cold countries have shorter ears. This is
VITEEE PCBE Mock Test - 14 - Question 13
Triplet codon refers to sequence of three bases on
VITEEE PCBE Mock Test - 14 - Question 14
Synthesis of DNA over RNA template/teminism occurs in
VITEEE PCBE Mock Test - 14 - Question 15
Biologically functional tryosine suppressor tRNA of Escherichia coli synthesised by Khorana in 1979 had
VITEEE PCBE Mock Test - 14 - Question 16
Mirabilis jalapa is an example of
VITEEE PCBE Mock Test - 14 - Question 17
How many types of gametes are found in F₁ progeny of cross between AABBCC and aabbcc
VITEEE PCBE Mock Test - 14 - Question 18
Recessive trait disorders are characterised by
VITEEE PCBE Mock Test - 14 - Question 19
ABO incompatibility differs from Rh incompatibility in that it
VITEEE PCBE Mock Test - 14 - Question 20
A kind of allergy is
VITEEE PCBE Mock Test - 14 - Question 21
Antibody production is carried out by
VITEEE PCBE Mock Test - 14 - Question 22
Antibody formation and immunity production by globulin protein is found in
VITEEE PCBE Mock Test - 14 - Question 23
Fruit of maize is
VITEEE PCBE Mock Test - 14 - Question 24
Idenfity the plant in which leaf is modified into spine
VITEEE PCBE Mock Test - 14 - Question 25
Opposite superposed arrangement of leaves is seen in
VITEEE PCBE Mock Test - 14 - Question 26
In green cell the enzyme catalase is localised in
VITEEE PCBE Mock Test - 14 - Question 27
Nitrogen fixation occurs in
VITEEE PCBE Mock Test - 14 - Question 28
Glucose fermentation by yeast yields
VITEEE PCBE Mock Test - 14 - Question 29
Vascular bundle are absent in
VITEEE PCBE Mock Test - 14 - Question 30
Lead concentration of blood is considered alarming at
VITEEE PCBE Mock Test - 14 - Question 31
The undesirable sounds, which disturb our environment, are called
VITEEE PCBE Mock Test - 14 - Question 32
In Minamata Bay of Japan, the animals which remained free from Minamata disease, are
VITEEE PCBE Mock Test - 14 - Question 33
Functions of testosterone include
VITEEE PCBE Mock Test - 14 - Question 34
For prevention against amoebiasis, we should :
VITEEE PCBE Mock Test - 14 - Question 35
The term,'biosphere' refers to
VITEEE PCBE Mock Test - 14 - Question 36
Transfer of genes from one gene pool to another is
VITEEE PCBE Mock Test - 14 - Question 37
Who gave evolutionary concept of determinants?
VITEEE PCBE Mock Test - 14 - Question 38
Darwin's natural selection is based on
VITEEE PCBE Mock Test - 14 - Question 39
Which of the following structures would not be considered an organ of excretion?
VITEEE PCBE Mock Test - 14 - Question 40
The site of tubular excretion is the
VITEEE PCBE Mock Test - 14 - Question 41

The efficiency of transformer is very high because

VITEEE PCBE Mock Test - 14 - Question 42

An electron and a proton have the same wave length. Which one of the following statements is correct about them?

VITEEE PCBE Mock Test - 14 - Question 43

The work function of metals A and B are in the ratio 1 : 2. If light of frequencies f and 2f are incident on metal surfaces of A and B respectively, the ratio of the maximum kinetic energies of photo electrons emitted is (f is greater than threshold frequency of A, 2f is greater than thershold frequency of B)

VITEEE PCBE Mock Test - 14 - Question 44

A sheet of aluminium is inserted in the air gap between the parallel plate capacitor, without touching any the two plates of the capacitor. The capacitance the capacitor is:

VITEEE PCBE Mock Test - 14 - Question 45

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 - 14 - Question 46

The resistance of a cell does not depend upon

VITEEE PCBE Mock Test - 14 - Question 47

Two resistance wires on joining in parallel the resultant resistance is 6/5 ohms. One of the wire breaks, the effective resistance is 2 ohms. The resistance of the broken wire is

VITEEE PCBE Mock Test - 14 - Question 48

When a wire of resistance R is stretched and its radius becomes r/2, then the new resistance will be

VITEEE PCBE Mock Test - 14 - Question 49

Two resistances 4 Ω and 6 Ω are in series and another 10Ω resistance is in parallel to the series combination. The resultant resistance is

VITEEE PCBE Mock Test - 14 - Question 50

Particle nature is shown by

VITEEE PCBE Mock Test - 14 - Question 51

Which of the following materials is the best conductor of electricity?

VITEEE PCBE Mock Test - 14 - Question 52

A transformer is used to light a 100W and 110V lamp from a 220V mains. If the main current is 0.5A, the efficiency of the transformer is approximately

VITEEE PCBE Mock Test - 14 - Question 53

A coil carrying electric current is placed in uniform magnetic field, then

Detailed Solution for VITEEE PCBE Mock Test - 14 - Question 53

The coil carrying current held in a magnetic field experiences a torque.

VITEEE PCBE Mock Test - 14 - 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 - 14 - Question 55

Which rays are not the portion of electro magnetic spectrum?

VITEEE PCBE Mock Test - 14 - Question 56

If the electric flux entering and leaving an enclosed surface respectively is φ₁ and φ₂, the electric charge inside the surface will be

VITEEE PCBE Mock Test - 14 - Question 57

n small drops of same size are charged to V volt each. They coalesce to form a bigger drop. The potential of the bigger drop is

VITEEE PCBE Mock Test - 14 - Question 58

A spherical shell of radius a with charge Q is expanded to radius b. The work done by the electric force in the process is

VITEEE PCBE Mock Test - 14 - Question 59

A charge q is located at the centre of a cube. The electric flux through any face is

VITEEE PCBE Mock Test - 14 - Question 60

A body of mass 1g and carrying a charge 10-8, C passes from two points P and Q. P and Q are at electric potentials 600V and 0V respectively. The velocity of the body at Q is 20 c m s-1 . Its velocity in m s-1 at P is

VITEEE PCBE Mock Test - 14 - Question 61

The electrical conductivity of the earth's atmosphere increases with altitude due to

VITEEE PCBE Mock Test - 14 - Question 62

A current carrying coil when freely suspended will allign itself

VITEEE PCBE Mock Test - 14 - Question 63

The first atomic reactor was constructed by

VITEEE PCBE Mock Test - 14 - Question 64

In two isotopes of an element the number of protons in their nuclei will be --- and number of neutrons in their nuclei will be

VITEEE PCBE Mock Test - 14 - Question 65

Which one of the following is a possible nuclear reaction?

VITEEE PCBE Mock Test - 14 - Question 66

When the photons of energy hv fall on a photo-sensitive surface (work function hv₀) electrons are emitted from the metallic surface. This is known as photoelectric effect. The electron coming out of the surface have a kinetic energy. Then it is possible to state that

VITEEE PCBE Mock Test - 14 - Question 67

The threshold wavelength is 2000 Å. The work function is

VITEEE PCBE Mock Test - 14 - Question 68

A symmetric double convex lens is cut in two equal parts by a plane perpendicular to the principal axis. It the power of the original lens is 4D, the power of a cut lens will be

VITEEE PCBE Mock Test - 14 - Question 69

The difference in the number of wavelengths, when yellow light propagates through air and vacuum columns of the same thickness, is one. The thickness of the air column is
(Refractive index of air μa = 1.0003 ; Wavelength of yellow light in vacuum 6000 Å )

Detailed Solution for VITEEE PCBE Mock Test - 14 - Question 69

Let λa and λ be the wavelengths of yellow light in air and vacuum respectively and va and c be their respective speeds in air and vacuum.
Since the frequency of light is the same in both media, we have



Now, if t is the thickness of each columm, then the number of wavelengths in the two media are

Given μ a = 1.0003 and λ = 6000 Å = 6000 x 10 − 8 cm. Using these values in (3), we have

VITEEE PCBE Mock Test - 14 - Question 70

When Boron is added as impurity to silicon, the resulting material is -------- semiconductor.

VITEEE PCBE Mock Test - 14 - Question 71

In the middle of the depletion layer of a reverse-biased p-n junction, the

VITEEE PCBE Mock Test - 14 - Question 72

In a p - type semiconductor, the electrical conduction is due to

VITEEE PCBE Mock Test - 14 - Question 73

At OK temperature, a p-type semiconductor

VITEEE PCBE Mock Test - 14 - Question 74

The band gap in germanium and silicon in eV respectively is

VITEEE PCBE Mock Test - 14 - Question 75

When the electrical conductivity of a semiconductor is due to the breaking of its covalent bonds, then the semiconductor is said to be

VITEEE PCBE Mock Test - 14 - Question 76

A example of a semiconductor is

VITEEE PCBE Mock Test - 14 - Question 77

A train is approaching a platform with a velocity ν. The frequency heard by an observer standing at the station is

VITEEE PCBE Mock Test - 14 - Question 78

A wave front is the locus of all the particles of a medium, which are vibrating in the

VITEEE PCBE Mock Test - 14 - Question 79

If the two slits in Young's experiment have width ratio 1:4, the ratio of intensity at maxima and minima in the interference pattern in

Detailed Solution for VITEEE PCBE Mock Test - 14 - Question 79

VITEEE PCBE Mock Test - 14 - 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 - 14 - Question 81

Which of the following processes is employed to convert alkyl halide into alcohol?

VITEEE PCBE Mock Test - 14 - Question 82

In which reaction aromatic aldehyde is treated with acid anhydride in presence of corresponding salt of the acid to give unsaturated aromatic acid?

VITEEE PCBE Mock Test - 14 - Question 83

Which of the following will give Cannizzaro reaction?

VITEEE PCBE Mock Test - 14 - Question 84

The functional group present in 3-methyl butanal is

VITEEE PCBE Mock Test - 14 - Question 85

Methane is formed when

VITEEE PCBE Mock Test - 14 - Question 86

Assume that the nucleus of the fluorine atom is a sphere of radius 5 x 10-13 cm. What is the density of matter in the nucleus?

Detailed Solution for VITEEE PCBE Mock Test - 14 - Question 86

The radius of a fluorine nucleus is x 10-13 cm
The mass of a F nucleus = 19/6 x 1023 g = 3.2 x 10-26 kg
The volume of a F nucleus = 4 3 πr3
= 4/3 x π x (5 x 10-13)3 cm3
= 5.2 x 10-37 cm3
Density = mass/volume
= 3.2 x 10 -26 k g /5.2 x 10-37 c m3
= 6.1 x 1010 kg cm-3 = 6.1 x 1013 g cm-3

VITEEE PCBE Mock Test - 14 - Question 87

Acid catalysed hydration of alkenes except ethene leads to the formation of

VITEEE PCBE Mock Test - 14 - Question 88

The three fundamental quantities are

VITEEE PCBE Mock Test - 14 - Question 89

An antibody is a/an

VITEEE PCBE Mock Test - 14 - Question 90

Which of the following is not a function of proteins?

VITEEE PCBE Mock Test - 14 - Question 91

Amides may be converted into amines by a reaction named after

VITEEE PCBE Mock Test - 14 - Question 92

The metal present in vitamin B₁₂ is

VITEEE PCBE Mock Test - 14 - Question 93

From the following values of dissociation constants of four acids which value represents the strongest acid ?

VITEEE PCBE Mock Test - 14 - Question 94

Which of the following gives blood red colour with KCNS ?

VITEEE PCBE Mock Test - 14 - Question 95

Which of the following compounds on boiling with KMnO₄ and the subsequent acidification will not give benzoic acid ?

VITEEE PCBE Mock Test - 14 - Question 96

A vessel at equilibrium, contains SO₃, SO₂ and O₂. Now some helium gas is added, so that total pressure increases while temperature and volume remain constant. According to Le-Chatelier's principle, the dissociation of SO₃

VITEEE PCBE Mock Test - 14 - Question 97

If an endothermic reaction is non-spontaneous at freezing point of water and becomes feasible at its boiling point, then

VITEEE PCBE Mock Test - 14 - Question 98

Which of the following is not chiral ?

VITEEE PCBE Mock Test - 14 - Question 99

The heats of dissociation (k.cals/mole) of methane and ethane are 360 and 620 respectively. From these, C - C bond energy (k.cals/mole) in ethane can be evaluated as

VITEEE PCBE Mock Test - 14 - Question 100

Which one of the following will not show geometrical isomerism?

VITEEE PCBE Mock Test - 14 - Question 101

Work done during the compression of a gas from a volume of 6dm3 to 4 dm3 against a constant external pressure of 3 atm is (1atm-litre=101.32J)

VITEEE PCBE Mock Test - 14 - Question 102

Which of the following could act as a propellant for rockets?

VITEEE PCBE Mock Test - 14 - Question 103

The cell potential of the following cell at 25 oC (in volts) is

VITEEE PCBE Mock Test - 14 - Question 104

Which of the following metal does not form polynuclear carbonyl?

VITEEE PCBE Mock Test - 14 - Question 105

Compound A has a molecular formula C₇H₇NO on treatment with Br₂/KOH, A gives an amine B which respond to carbylamine test. B on diazotisation and coupling with phenol give an azo dye. A can be

VITEEE PCBE Mock Test - 14 - Question 106

A smuggler could not carry gold by chemically depositing iron on the gold surface since

VITEEE PCBE Mock Test - 14 - Question 107

Ethyl isocyanide on acidic hydrolysis generates

VITEEE PCBE Mock Test - 14 - Question 108

Calculate the amount of change flowing in 2 minute in a wire of resistance 10 Ω when a potential difference of 20 V is applied

VITEEE PCBE Mock Test - 14 - Question 109

Which is most explosive?

VITEEE PCBE Mock Test - 14 - Question 110

In the preparation of sodium carbonate (Na₂CO₃), which of the following is used as raw material?

VITEEE PCBE Mock Test - 14 - Question 111

Which one of the following indicates the value of the gas constant R ?

VITEEE PCBE Mock Test - 14 - Question 112

Glass is a

VITEEE PCBE Mock Test - 14 - Question 113

The three important oxidation states of phosphorus are

VITEEE PCBE Mock Test - 14 - Question 114

When ether is exposed in air for sometime, an explosive substance produced is

VITEEE PCBE Mock Test - 14 - Question 115

xMnO₄- + yH₂SO₄ → 2Mn2+ + 5H₂O +9O₂ + ze- In this reaction values of x, y and z are

VITEEE PCBE Mock Test - 14 - Question 116

Which of the following has maximum Frenkel defect?

VITEEE PCBE Mock Test - 14 - Question 117

In the extraction of iron, slag is produced which is

VITEEE PCBE Mock Test - 14 - Question 118

(2R, 3R)- 2, 3-butanediol is:

VITEEE PCBE Mock Test - 14 - Question 119

A transition metal x has configuration [Ar]3d4 in its +3 oxidation state. Its atomic number is

VITEEE PCBE Mock Test - 14 - Question 120

Cod Liver oil is

VITEEE PCBE Mock Test - 14 - Question 121

Find the synonym of SUSTAIN

VITEEE PCBE Mock Test - 14 - Question 122

Fill in the blank with appropriate word.
Our flight was.........from Jaipur to Agra airport.

VITEEE PCBE Mock Test - 14 - Question 123

Find the antonym of COVERT

VITEEE PCBE Mock Test - 14 - Question 124

Choose the alternative which best expresses the meaning of the idiom/phrase.

To follow the primrose path

VITEEE PCBE Mock Test - 14 - Question 125

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

My mother asked me when WOULD I have a glass of milk.

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