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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

A.
Spongy tissue
B.
Palisade tissue
C.
Guard cells
D.
Bundle sheath

Solution:

QUESTION: 2

Tassar silk is extracted from

A.
Bombyx mori
B.
Apis indica
C.
Antheraea roylei
D.
Apis dorsata

Solution:

QUESTION: 3

Glycolysis can not occur in the absence of

A.
Ca
B.
Mg
C.
Mn
D.
Co

Solution:

QUESTION: 4

Based on its function, the heart is often referred to as a “double pump”. Which of the following would explain this?

A.
. The heart has two sets of valv
B.
The heart is controlled by both nerves and hormones
C.
The heart moves blood through two circulatory pathways
D.
The heart moves blood containing both nutrients and wastes.

Solution:

QUESTION: 5

One of the following is native to West Asia

A.
potato
B.
wheat
C.
rye
D.
barley

Solution:

QUESTION: 6

Chloroplasts are self replicating units as they possess

A.
DNA
B.
RNA
C.
Neither DNA nor RNA
D.
Both DNA and RNA

Solution:

QUESTION: 7

Autolysis is connected with which one of the following organelle?

A.
peroxisome
B.
lysosome
C.
kinetosome
D.
glyoxisome

Solution:

QUESTION: 8

Carboniferous period of coal deposition was

A.
50 million years ago
B.
500 million years ago
C.
300 million years ago
D.
2000 million years ago

Solution:

QUESTION: 9

Experiments on Acetabularia by Hammerling proved the role of

A.
Cytoplasm in controlling differentiation
B.
Nucleus in heredity
C.
Chromosomes in heredity
D.
Nucleo-cytoplasmic ratio

Solution:

QUESTION: 10

In comparative study of grassland and pond ecosystems

A.
Biotic components are almost similar
B.
Abiotic components are almost similar
C.
Primary and secondary consumers are similar
D.
Biotic and abiotic components are different

Solution:

QUESTION: 11

Evolution of a species or group can be studied through

A.
Fossils
B.
Carbon dating
C.
DNA analysis
D.
All the above

Solution:

QUESTION: 12

The earliest fossil form in the phylogeny of horse is

A.
Eohippus
B.
Mesohippus
C.
Merychippus
D.
Equus

Solution:

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

A.
UGU and GUG
B.
UUG and GGU
C.
GUG and UGU
D.
UGG and GUU

Solution:

QUESTION: 14

Coded information in nucleic acid depends upon

A.
Arrangement of nucleotides
B.
Position of nucleotides
C.
Number of nucleotides
D.
All the above

Solution:

QUESTION: 15

Meselson and Stahl proved by their experiment about DNA, that it has

A.
conservative replication
B.
biodirectional replication
C.
anti-parallel to each helix
D.
semiconservative replication

Solution:

QUESTION: 16

Main reason for success of Mendel was

A.
He employed statistical analysis
B.
He performed statistical experiments
C.
His choice of Pisum sativum
D.
He was the first to work on a plant

Solution:

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

A.
64
B.
0
C.
16
D.
32

Solution:

QUESTION: 18

A human male has one one barr body in his somatic cell nuclei. The chromosome constitution must be

A.
XO
B.
XYY
C.
XXY
D.
XXXY

Solution:

QUESTION: 19

Cornea transplantation has become common due to

A.
Easy preservation
B.
Easy transplantation
C.
Easy availability
D.
It does not involve immune system due to absence of blood supply

Solution:

QUESTION: 20

Which would result in haemolysis in foetus ?

A.
AO incompatibility
B.
AB incompatibility
C.
Rh incompatibility
D.
All of these

Solution:

QUESTION: 21

Organ transplant rejection is prevented by

A.
Antibodies
B.
New T-cells
C.
Immunostimulatory druts
D.
Immunosuppressant drugs

Solution:

QUESTION: 22

T.T and TAB second booster dose is give at the age of

A.
2 - 3 years
B.
4 - 6 years
C.
10th year
D.
16th year

Solution:

QUESTION: 23

Basal placentation is found in

A.
Compositae
B.
Cruciferae
C.
Solanaceae
D.
Leguminosae

Solution:

QUESTION: 24

Which type of meristem is an example of vascular cambium of the root ?

A.
apical
B.
intercalary
C.
secondary
D.
root apical

Solution:

QUESTION: 25

Which of the following root system provides support and storage?

A.
Multiple root
B.
Tap root
C.
Adventitious root
D.
Fibrous root

Solution:

QUESTION: 26

Formation of ATP in photosynthesis and respiration is an oxidation process which utilises the energy from

A.
Cytochromes
B.
Ferredoxin
C.
Electrons
D.
Carbon dioxide

Solution:

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?

A.
Ustilago scitaminae
B.
Tilletia foetida
C.
Tilletia tritici
D.
Ustilago tritici

Solution:

QUESTION: 28

Biofertilisers include

A.
Nitrogen fixing bacteria
B.
Mycorrhiza
C.
Nitrogen fixing cyanobacteria
D.
All the above

Solution:

QUESTION: 29

Which one does not occur in xylem

A.
Medullary rays
B.
Vascular rays
C.
Vessels
D.
Tracheids

Solution:

QUESTION: 30

Green muffler is related to pollution of

A.
Air
B.
Soil
C.
Noise
D.
Water

Solution:

QUESTION: 31

Atmospheric content of CO₂ is

A.
0.0034%
B.
0.034%
C.
0.34%
D.
3.4%

Solution:

QUESTION: 32

Intensity of sound in normal conversation is

A.
10-20 dB
B.
30-60 dB
C.
70-90 dB
D.
120-150 dB

Solution:

QUESTION: 33

'Maurer's dots' are found in the :

A.
Plasmodium vivax
B.
Plasmodium ovale
C.
Plasmodium malariae
D.
Plasmodium falciparum

Solution:

QUESTION: 34

Chemical messengers belong to four main molecular classes. Progesterone is a(n)

A.
Amino acid derivative
B.
Small peptide
C.
Protein
D.
Steroid

Solution:

QUESTION: 35

Flightless bird, Cassowary is found in

A.
Australia
B.
New Zealand
C.
Indonesia
D.
Mauritius

Solution:

QUESTION: 36

Neo-Darwinism believes that new species develop through

A.
Mutations with natural selection
B.
Continuous variations with natural selection
C.
Hybridisation
D.
Mutations

Solution:

QUESTION: 37

Filtrate enters the Bowman’s capsule by

A.
Active transport
B.
Tubular excretion
C.
Pressure filtration
D.
Selective reabsorption

Solution:

QUESTION: 38

Gene frequency in a population remains stable unless and untill there is

A.
random drift
B.
random mating
C.
selection
D.
mutation

Solution:

QUESTION: 39

The use and disuse principle of evolution or theory of "inheritance of acquired characters" was proposed by

A.
Hugo de Vries
B.
Lamarck
C.
Weismann
D.
Darwin

Solution:

QUESTION: 40

Which substance would normally be found in higher concentration in urine than in blood?

A.
Urea
B.
Protein
C.
Oxygen
D.
Glucose.

Solution:

QUESTION: 41

Choke coil works on the principle of

A.
Transient current
B.
Self induction
C.
Mutual induction
D.
Wattless current

Solution:

QUESTION: 42

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

A.
infinite energy
B.
maximum energy
C.
minimum energy
D.
zero energy

Solution:

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

A.
0.001 J
B.
0.01 J
C.
0.1 J
D.
1 J

Solution:

QUESTION: 44

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

A.
In the direction of electric field
B.
In the direction opposite to the electric field
C.
At right angles to the electric field
D.
Zero, because the cathode rays do not have any electric charge

Solution:

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

A.
0.40g
B.
0.50g
C.
0.67g
D.
0.27g

Solution:

QUESTION: 46

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

A.
15^o
B.
60^o
C.
30^o
D.
5.5^o

Solution:

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

A.
10 Ω
B.
20 Ω
C.
40 Ω
D.
100 Ω

Solution:

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

A.
2
B.
8
C.
10
D.
12

Solution:

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

A.
r₁ + r₂
B.
r₁ − r₂
C.
r₁ + r₂/r₁r₂
D.
r₁ − r₂/2

Solution:

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

A.
0.01 Ω
B.
0.05 Ω
C.
2000 Ω
D.
5000 Ω

Solution:

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

A.
Penetration power
B.
Frequency
C.
Wavelength
D.
Intensity

Solution:

QUESTION: 52

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

A.
LdI/dt
B.
Zero
C.
1/2 IL²
D.
1/2 LI²

Solution:

E = 1/2 LI²

QUESTION: 53

What is increased in a step-down transformer

A.
Voltage
B.
Power
C.
Current
D.
Current density

Solution:

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

A.
0.2 H
B.
0.4 H
C.
0.8 H
D.
0.1 H

Solution:

QUESTION: 55

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

A.
ultraviolet waves
B.
X-rays
C.
γ-rays
D.
microwaves

Solution:

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

A.
1
B.
r₁/r₂
C.
r₂/r₁
D.
r₁r₂

Solution:

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

A.
8 V
B.
2 V
C.
0.1 V
D.
0.5 V

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

A.
zero
B.
80 V
C.
800 V
D.
8 V

Solution:

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

A.
11.2 μF
B.
15.6 μF
C.
19.2 μF
D.
22.4 μF

Solution:

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

A.
1:4
B.
4:1
C.
1:2
D.
2:!

Solution:

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

A.
8 μ F
B.
15 μ F
C.
2 μ F
D.
1 μ F

Solution:

QUESTION: 62

The magnetic field near a current carrying conductor is given by

A.
Coulomb's law
B.
Lenz's law
C.
Biot-Savart's law
D.
Kirchoff's law

Solution:

QUESTION: 63

Cadmium rods are used in a nuclear reactor

A.
To produce neutrons
B.
To speed up neutrons
C.
To absorb neutrons
D.
None

Solution:

QUESTION: 64

What is the particle x in the following nuclear reaction?

A.
Electron
B.
Proton
C.
Photon
D.
Neutron

Solution:

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

A.
1/4 λ
B.
4 λ
C.
2 λ
D.
1/2 λ

Solution:

QUESTION: 66

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

A.
Work function of the surface
B.
Amount of photoelectric current
C.
Stopping potential will be reduced
D.
Maximum K.E. of photoelectrons

Solution:

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

A.
5460 Å
B.
4860 Å
C.
3640 Å
D.
2810 Å

Solution:

QUESTION: 68

The work function of oxide coated tungsten emitter will be

A.
1.1 eV
B.
2.62 eV
C.
4.72 eV
D.
4.5 eV

Solution:

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

A.
Direct biased
B.
Reverse biased
C.
Forward biased
D.
Unbiased

Solution:

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

A.
30⁰
B.
40⁰
C.
50⁰
D.
60⁰

Solution:

QUESTION: 71

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

A.
Electrons move from base to collector
B.
Holes move from emitter to base
C.
Holes move from collector to base
D.
Holes move from base to emitter

Solution:

QUESTION: 72

Which one of the following is an incorrect statement?

A.
In an intrinsic semiconductor, the number of holes in the valence band is equal to the number of electrons in the conduction band.
B.
When heated the conductivity of an intrinsic semiconductor increases.
C.
The fermi level lies near the valence band in an intrinsic semiconductor.
D.
The majority carriers in a p - type semiconductors are holes.

Solution:

QUESTION: 73

The most commonly used material for making transistor is

A.
Copper
B.
Silicon
C.
Ebonite
D.
Silver

Solution:

QUESTION: 74

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

A.
holes are majority charge cariers
B.
holes are minority charge carriers
C.
electrons are majority charge carriers
D.
neutrons are majority charge carriers

Solution:

QUESTION: 75

At zero degree Kelvin a piece of germanium

A.
Becomes semiconductor
B.
Becomes good conductor
C.
Becomes bad conductor
D.
Has maximum conductivity

Solution:

QUESTION: 76

In p-type semiconductor

A.
Major current carrier is electrons
B.
Major carrier is mobile negative ions
C.
Major carrier is mobile holes
D.
The number of mobile holes exceeds the number of acceptors

Solution:

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

A.
Bright
B.
Dark
C.
No interference pattern will be observed on the screen
D.
Depends on the position of screen from the slits

Solution:

QUESTION: 78

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

A.
decreases
B.
increases
C.
remains same
D.
first '1' then '2'

Solution:

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

A.
Half
B.
One - fourth
C.
Double
D.
Four times

Solution:

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

A.
4 : 1
B.
1 : 4
C.
3 : 1
D.
1 : 3

Solution:

QUESTION: 81

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

A.
Acetone
B.
Methyl cyanide
C.
Ethylene oxide
D.
Ethyl acetate

Solution:

QUESTION: 82

Which of the following will respond to Cannizzaro's reaction

A.
2,2-Dimethylpropanal
B.
Acetaldehyde
C.
Propionaldehyde
D.
None of these

Solution:

QUESTION: 83

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

A.
HCHO
B.
CH₃CHO
C.
(CH₃)₂CO
D.
None of these

Solution:

QUESTION: 84

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

A.
Formaldehyde
B.
Benzaldehyde
C.
Acetone
D.
Methyl chloride

Solution:

QUESTION: 85

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

A.
1
B.
2
C.
3
D.
4

Solution:

QUESTION: 86

1, 3-Butadiene when treated with Br₂ gives

A.
1, 4-Dibromo-2-butene
B.
1, 3-Dibromo-2-butene
C.
3,4-Dibromo-2-butene
D.
2,3-Dibromo-2-butene

Solution:

QUESTION: 87

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

A.
Electrophilic addition
B.
Electrophilic substitution
C.
Nucleophilic addition
D.
Nucleophilic substitution

Solution:

QUESTION: 88

Which is correct statement about proton?

A.
Proton is the nucleus of deuterium
B.
Proton is alpha particle
C.
Proton is ionized hydrogen molecule
D.
Proton is ionized hydrogen atom

Solution:

QUESTION: 89

The reason for double helical structure of DNA is operation of

A.
van der Waals' forces
B.
dipole-dipole interaction
C.
hydrogen bonding
D.
electrostatic attractions

Solution:

QUESTION: 90

A nucleotide consists of

A.
carbon sugar
B.
nitrogen containing base
C.
phosphoric acid
D.
All of these

Solution:

QUESTION: 91

Which has maximum protein content?

A.
Ground nut
B.
Cow milk
C.
Egg
D.
Wheat

Solution:

QUESTION: 92

In the above sequence of reactions, A and B are

Solution:

QUESTION: 93

An alkyl cyanide forms an amide when it is treated with

A.
H₂O + HCl
B.
NaOH + H₂O
C.
H₂O₂ + NaOH
D.
H₂SO₄ + H₂O

Solution:

QUESTION: 94

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

A.
-NH₂
B.
-COOH
C.
-CH₃
D.
-Cl

Solution:

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

A.
increases
B.
decreases
C.
becomes zero
D.
does not change

Solution:

QUESTION: 96

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

A.
favoured by decrease in temperature
B.
favoured by increase in pressure
C.
unchanged on changing in pressure
D.
equilibrium point shifts by adding catalyst

Solution:

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?

A.
13.0 kcal
B.
-13.0 kcal
C.
27.0 kcal
D.
-27.0 kcal

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 (ΔG^o)is equal to 1895 J-mol^-1, then pressure at which graphite will be transformed into diamond at 298 K is

A.
7.92 x 10⁸ Pa
B.
9.92 x 10⁸ Pa
C.
9.92 x 10¹⁰ Pa
D.
9.92 x 10¹⁸ Pa

Solution:

QUESTION: 99

An example of anthraquinone dye is

A.
Alizarin
B.
Basic acid
C.
Methylene blue
D.
Phenolphthalein

Solution:

QUESTION: 100

The heat of neutralisation is maximum when

A.
sodium hydroxide is neutralised by acetic acid
B.
ammonium hydroxide is neutralized by acetic acid
C.
ammonium hydroxide is neutralized by hydrochloric acid
D.
sodium hydroxide is neutralized by hydrochloric acid

Solution:

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

A.
2-Cyano, 3-methylhexane
B.
2-Methyl,4-cyanopentane
C.
2,4-Dimethyl pentane nitrile
D.
2-dimethyl,4-cyanopentane

Solution:

QUESTION: 102

Which one of the following has tetrahedral geometry?

A.
[CoNH₃)₆]³⁺
B.
[Ni(CN)₄]^2-
C.
Fe(Co)₅
D.
[NiCl₄]^2-

Solution:

QUESTION: 103

Which of the following compounds shows optical isomerism?

A.
[Co(CN₆]^3-
B.
[ZnCl₄]^2-
C.
[Cr(C₂O₄)₃]^3-
D.
[Cu(NH₃)₄]²⁺

Solution:

QUESTION: 104

In the electrolysis of dilute H₂SO₄ using platinum electrode

A.
H₂ is liberated at cathode
B.
O₂ is produced at cathode
C.
Cl₂ is obtained at cathode
D.
NH₃ is produced at anode

Solution:

QUESTION: 105

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

A.
Phenanthroline
B.
Methyl orange
C.
Methyl red
D.
Indigo

Solution:

QUESTION: 106

Acetaldoxime reacts with P₂O₅ to give

A.
Methyl cyanide
B.
Ethyl cyanate
C.
Ethyl cyanide
D.
Mixture of all these

Solution:

QUESTION: 107

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

A.
0
B.
1
C.
10
D.
100

Solution:

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

A.
+ 0.44 V
B.
+ 1.12 V
C.
- 0.44 V
D.
- 1.12 V

Solution:

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

A.
SiCl₄
B.
PH₃
C.
PCl₅
D.
Acetylene

Solution:

QUESTION: 110

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

A.
15 atmospheres and 200 K
B.
1 atm and 273 K
C.
0.5 atm and 500 K
D.
15 atm and 500 K

Solution:

QUESTION: 111

Which one of the following compounds does not exist ?

A.
NCl₅
B.
AsF₅
C.
SbCl₅
D.
PF₅

Solution:

QUESTION: 112

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

A.
CH₃COOCH₃
B.
CH₃CH₂COOCH₃
C.
CH₃COOCH₂CH₃
D.
CH₃CH₂OH

Solution:

QUESTION: 113

Cupellation process is used in the metallurgy of

A.
Cu
B.
Ag
C.
Zn
D.
Al

Solution:

QUESTION: 114

Which one of the following elements is most metallic?

A.
P
B.
Sb
C.
As
D.
Bi

Solution:

QUESTION: 115

The oxidation number of carbon in CH₂O is

A.
-2
B.
+2
C.
0
D.
+4

Solution:

QUESTION: 116

Stainless steel contains

A.
Fe + Cr + Cu
B.
Fe + C + Ni
C.
Fe + Cr + Ni
D.
Fe + Ni + Cu

Solution:

QUESTION: 117

Which of following pair represent diastereomers?

Solution:

QUESTION: 118

In the case of autocatalysis

A.
reactant catalyses
B.
heat produced in the reaction catalyses
C.
product catalyses
D.
solvent catalyses

Solution:

QUESTION: 119

Bragg's law is given by equation

A.
n λ = 2 θ sin θ
B.
n λ = 2 d sin θ
C.
2 n λ = d sin θ
D.
n λ = 1/2 d sin θ

Solution:

QUESTION: 120

Reaction of zinc with cold and very dil. HNO₃ gives

A.
Zn(NO₃)₂ + N₂O
B.
Zn(NO₃)₂ + NO
C.
Zn(NO₃)₂ + NH₄NO₃
D.
Zn(NO₃)₂ + NO₂

Solution:

QUESTION: 121

Find the antonym of BOISTEROUS.

A.
quiet
B.
business like
C.
noisy
D.
rowdy

Solution:

QUESTION: 122

Find the Synonym of COMBAT

A.
Querrel
B.
Fight
C.
Conflict
D.
Feud

Solution:

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.

A.
approached
B.
encountered
C.
confronted
D.
upheld

Solution:

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.

A.
close friendship
B.
intense dislike
C.
a love-hate relationship
D.
cool indifference

Solution:

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.

A.
without having any writing or no underlining in them
B.
and contain no writing or underlining
C.
without containing writing or be underlined
D.
and should not have writings written or not be underlined

Solution:

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Largest number of chloroplasts in the leaf is in

Spongy tissue

Palisade tissue

Guard cells

Bundle sheath

Tassar silk is extracted from

Bombyx mori

Apis indica

Antheraea roylei

Apis dorsata

Glycolysis can not occur in the absence of

Ca

Mg

Mn

Co

. The heart has two sets of valv

The heart is controlled by both nerves and hormones

The heart moves blood through two circulatory pathways

The heart moves blood containing both nutrients and wastes.

potato

wheat

rye

barley

DNA

RNA

Neither DNA nor RNA

Both DNA and RNA

peroxisome

lysosome

kinetosome

glyoxisome

50 million years ago

500 million years ago

300 million years ago

2000 million years ago

Cytoplasm in controlling differentiation

Nucleus in heredity

Chromosomes in heredity

Nucleo-cytoplasmic ratio

Biotic components are almost similar

Abiotic components are almost similar

Primary and secondary consumers are similar

Biotic and abiotic components are different

Fossils

Carbon dating

DNA analysis

All the above

Eohippus

Mesohippus

Merychippus

Equus

UGU and GUG

UUG and GGU

GUG and UGU

UGG and GUU

Arrangement of nucleotides

Position of nucleotides

Number of nucleotides

All the above

conservative replication

biodirectional replication

anti-parallel to each helix

semiconservative replication

He employed statistical analysis

He performed statistical experiments

His choice of Pisum sativum

He was the first to work on a plant

64

0

16

32

XO

XYY

XXY

XXXY

Easy preservation

Easy transplantation

Easy availability