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VITEEE PCBE Mock Test - 10

125 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE PCBE Mock Test - 10

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This mock test of VITEEE PCBE Mock Test - 10 for JEE helps you for every JEE entrance exam. This contains 125 Multiple Choice Questions for JEE VITEEE PCBE Mock Test - 10 (mcq) to study with solutions a complete question bank. The solved questions answers in this VITEEE PCBE Mock Test - 10 quiz give you a good mix of easy questions and tough questions. JEE students definitely take this VITEEE PCBE Mock Test - 10 exercise for a better result in the exam. You can find other VITEEE PCBE Mock Test - 10 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

The main function of capillaries is to

A.
Return blood to the hea
B.
Prevent the backflow of blood.
C.
Take blood away from the heart
D.
Exchange nutrients and wastes with tissues

Solution:

QUESTION: 3

Glycolysis can not occur in the absence of

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

Solution:

QUESTION: 4

Kala-azar and Oriental Sore are spread by

A.
Housefly
B.
Bed Bug
C.
Sand Fly
D.
Fruit Fly

Solution:

QUESTION: 5

The products of commercial importance produced by coconut palm are

A.
latex and oil
B.
rubber and wood
C.
oil and fibre
D.
fibre and rubber

Solution:

QUESTION: 6

The protein-lipid ratio in golgi bodies is approximately

A.
80 : 20
B.
70 : 30
C.
60 : 40
D.
50 : 50

Solution:

QUESTION: 7

Cell eating is

A.
Phagocytosis
B.
Pinocytosis
C.
Diffusion
D.
Osmosis

Solution:

QUESTION: 8

Enzymes connected with oxidative electron transport system are found in

A.
Plastids
B.
Mitochondria
C.
Golgi bodies
D.
Endoplasmic reticulum

Solution:

QUESTION: 9

Which part of the world has high density of organisms?

A.
Grasslands
B.
Savannahs
C.
Deciduous forests
D.
Tropical rain forests

Solution:

QUESTION: 10

Homologous organs are

A.
Dissimilar origin and dissimilar structures
B.
Dissimilar origin but similar functions
C.
Similar origin with similar or dissimilar functions
D.
Similar origin with dissimilar functions

Solution:

QUESTION: 11

Ancestral amphibians were tetrapods that evolved during

A.
Carboniferous period
B.
Cretaceous period
C.
Jurassic period
D.
Devonian period

Solution:

QUESTION: 12

Which is the correct order of evolution?

A.
Leucosolenia-Hydra-amoeba-Ascaris
B.
Ascaris-Amoeba-Leucosolenia-Hydra
C.
Amoeba-Leucosolenia-Hydra-Ascaris
D.
None of these

Solution:

QUESTION: 13

Barbara Mc Clintock is famous for her work on

A.
Rice
B.
Wheat
C.
Maize
D.
Sugarcane

Solution:

QUESTION: 14

Which of the folloing initiates transcription m-RNA on DNA template ?

A.
t-RNA
B.
sigma factor
C.
core enzyme
D.
both '1' and '2'

Solution:

QUESTION: 15

Which one of the following codons codes for the same information as UGC

A.
UGU
B.
UGA
C.
UAG
D.
UGG

Solution:

QUESTION: 16

Agrobacterium tumefaciens, a large plasmid, which induces tumor in the plants, is termed as

A.
Ti plasmid
B.
Ri plasmid
C.
recombinant palsmid
D.
shine dolgano sequence

Solution:

QUESTION: 17

Independent assortment means :

A.
random distribution of Mendelian factors in the subsequent generations
B.
pairing of homologous chromosomes
C.
crossing over or genetic recombination
D.
none of the above

Solution:

QUESTION: 18

ABO incompatibility differs from Rh incompatibility in that it

A.
Occurs in the first child
B.
Produces a milder haemolytic disorder
C.
Does not reqiure transfusion
D.
All of these

Solution:

QUESTION: 19

Blood group AB has

A.
No antigen
B.
No antibody
C.
Neither antigen nor antibody
D.
Both antigen and antibody

Solution:

QUESTION: 20

A genetically diseased male marries a normal female producing three diseased girls and five normal sons. It would be a

A.
Sex influenced diseases
B.
Sex linked diseases
C.
Sex recessive disease
D.
Blood group inheritance disease

Solution:

QUESTION: 21

James Phipps and Ali Marvow are related to viral disease that has disappeared

A.
Cow pox
B.
Small pox
C.
Chicken pox
D.
Tuberculosis

Solution:

QUESTION: 22

Antigens are found

A.
Inside cytoplasm
B.
Inside nucleus
C.
On nuclear envelope
D.
On cell structure

Solution:

QUESTION: 23

The flowers in a cyathium resemble the ray florets of sunflower in being

A.
Sessile
B.
Imperfect
C.
Neuter
D.
Bisexual

Solution:

QUESTION: 24

Aril represents the edible part of

A.
Banana
B.
Litchi
C.
Mango
D.
Apple

Solution:

QUESTION: 25

Porous wood mainly contains

A.
fibres
B.
vessels
C.
tracheids
D.
solid secretions

Solution:

QUESTION: 26

A very efficient converter of solar energy with net productivity of 2-4 kg/m₂ or more is the crop of

A.
Wheat
B.
Sugarcane
C.
Rice
D.
Bajra

Solution:

QUESTION: 27

Which one of the following substances plays an important role in biochemical defence of host plants?

A.
Mycotoxin
B.
Phytoalexin
C.
Pathotoxin
D.
Vivotoxin

Solution:

QUESTION: 28

In callus culture, roots can be induced by the supply of

A.
Auxin and no cytokinin
B.
Higher concentration of auxin and lower concentration of cytokinin
C.
Higher concentration of cytokinin and lower concentration of auxin
D.
Both auxin and cytokinin in equal proportions

Solution:

QUESTION: 29

Angiosperms contain

A.
No sieve tubes
B.
No vessels
C.
Tracheids only
D.
Vessels

Solution:

QUESTION: 30

Which can be used for clearing water body

A.
Chlorella
B.
Eichhornia
C.
Cyanobacteria
D.
Chlamydomonas

Solution:

QUESTION: 31

Minamata disease was caused due to the consumption of

A.
oysters with lot of pesticide
B.
fish contaminated with mercury
C.
sea food containing lot of cadmium
D.
sea food contaminated with selenium

Solution:

QUESTION: 32

Eutrophication is found in

A.
Agricultural land near thermal plant
B.
Saline soil
C.
Lake
D.
Mountain

Solution:

QUESTION: 33

Which of the following unicellular organism has a macronucleus for trophic function and one or more micronuclei for reproduction?

A.
Euglena
B.
Amoeba
C.
Paramecium
D.
Trypanosoma

Solution:

QUESTION: 34

Early in embryonic development, the morula forms a hollow-ball stage; shortly thereafter, some cells migrate to the interior of this ball and become the

A.
Trophoblast
B.
Embryoblast
C.
Fetus
D.
Blastocyst

Solution:

QUESTION: 35

Members of kingdom protista have

A.
Free nucleic acid protista have
B.
Membrane bound nucleo-proteins lying embedded in the cytoplasm
C.
Genes containing nucleoproteins condensed together in loose mass
D.
Nucleoprotein in direct contact with the rest of the cell substance

Solution:

QUESTION: 36

de Vries called variants as

A.
genes
B.
mutons
C.
elementary particles
D.
all above

Solution:

QUESTION: 37

Darwin in the 'theory of natural selection' states that

A.
natural selection acts on favourable variations, which appear among individuals of a species
B.
environment does not play any role in the evolution
C.
characters aquired during the life of an individual are inherited by its offsprings
D.
heritable variations arise through changes in the gene complex of a species

Solution:

QUESTION: 38

Darwin's theory of Natural Selection fails to explain

A.
Role of variations
B.
Survival of the fittest
C.
Arrival of the fittest
D.
Strugle of the existance

Solution:

QUESTION: 39

Which of the following structures would not be considered an organ of excretion?

A.
Skin
B.
Liver
C.
Colon
D.
Small intestine

Solution:

QUESTION: 40

The site of tubular excretion is the

A.
Loop of Henle
B.
Bowman’s capsule
C.
Distal convoluted tubule
D.
Proximal convoluted tubule

Solution:

QUESTION: 41

An electron beam is subjected to perpendicular electric and magnetic fields of 5x10^-4 wbm^-2 and 3x10³ Vm^-1resectively. If there is no deflection, the velocity of electrons is

A.
36 x 10¹² m s^-1
B.
1.67x10^-7 m s^-1
C.
2.78 x 10^-14 m s^-1
D.
6 x 10⁶ m s^-1

Solution:

QUESTION: 42

In an induction coil with resistance, the induced emf will be maximum when

A.
The switch is put on due to high resistance
B.
The switch is put off due to high resistance
C.
The switch is put on due to low resistance
D.
The switch is put off due to low resistance

Solution:

QUESTION: 43

The energy of an X - ray photon of wavelength 1.65 Å is (h = 6.6x10^-4 J - s ; c = 3x10⁸ m s^-1 ; 1 e V = 1.6 x 10^-19 J

A.
3.5 KeV
B.
5.5 KeV
C.
7.5 KeV
D.
9.5 KeV

Solution:

QUESTION: 44

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

A.
decreases
B.
remains unchanged
C.
becomes infinite
D.
increases

Solution:

The thickness of the foil is negligible

QUESTION: 45

Of the following, the one that does not make use of chemical effect of electric current is

A.
electroplating
B.
electrotyping
C.
thermo electric refrigerator
D.
voltaic cells

Solution:

QUESTION: 46

Consider telecommunication through optical fibres. Which of the following statements is not correct

A.
Optical fibres have extremely low transmission loss
B.
Optical fibres may have homogeneous core with a suitable cladding
C.
Optical fibres can be of graded refractive index
D.
Optical fibres are subject to electromagnetic interference from outside

Solution:

QUESTION: 47

When connected across the terminals of a cell, a voltmeter measures 5V and a connected ammeter measures 10 A of current. A resistance of 2 ohms is connected across the terminals of the cell. The current flowing through this resistance will be

A.
2.5 A
B.
2.0 A
C.
5.0 A
D.
7.5 A

Solution:

QUESTION: 48

The balancing length for a cell is 560cm in a potentiometer experiment when an extenral resistance of 10 Ω is connected in parallel to the cell, the balancing length changes by 60cm. The internal resistance of the cell in ohms is

A.
1.6
B.
1.4
C.
1.2
D.
0.12

Solution:

QUESTION: 49

If only 2% of the main current is to be pass through a galvanometer of resistance G, then the resistance of shunt will be

A.
G/50
B.
G/49
C.
50 G
D.
49 G

Solution:

QUESTION: 50

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 the first, then resistance of mercury column is

A.
R/2
B.
R/4
C.
R/8
D.
R/16

Solution:

QUESTION: 51

The mass of photon at rest is

A.
Zero
B.
hv
C.
hc/λ
D.
hv/c

Solution:

QUESTION: 52

Choke coil works on the principle of

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

Solution:

QUESTION: 53

A rectangular coil of 300 turns has an area of 25 cm.x10cm. The coil rotates with a speed of 50 cps in a uniform magentic field of 4x10^-2 T, about an axis perpendicular to the field. The peak value of the induced e.m.f. is

A.
3 Π V
B.
30 Π V
C.
300 Π V
D.
3000 Π V

Solution:

Induced emf in a rectangular coil is given by : E = nBAωsin θ
substituting n = 300; B = 4 x 10^-2 − T ;
A = 25 x 10 x 10^-4 m²
ω = 2 π v = 2 x 50 π rad s − 1
θ = 90 ∘ ,
we get; E = 30Πv

QUESTION: 54

Which of the following does not obey the phenomenon of mutual induction?

A.
dynamo
B.
transformer
C.
induction coil
D.
electric heater

Solution:

QUESTION: 55

Which of the following has the minimum frequency?

A.
radio wave
B.
micro wave
C.
audible wave
D.
ultrasonic wave

Solution:

QUESTION: 56

A cylinder of radius R and length L is placed in a uniform electric field E parallel to the cylinder axis, the total electric flux for the surface of the cylinder is

A.
2 π R²E
B.
π R²/E
C.
π R² + πR²/E
D.
zero

Solution:

Total charge enclosed is zero

QUESTION: 57

If a point charge q be rotated in a circle of radius r around a charge Q, the work done will be

A.
Zero
B.
qQ/2 ε₀ r
C.
Infinite
D.
None of these

Solution:

QUESTION: 58

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

A.
9 x10^-3 J
B.
zero
C.
9 x10^-3 eV
D.
1 J

Solution:

QUESTION: 59

A capacitor of capacity 10 μ F is charged to 40V and a second capacitor of capacity 15 μ F is charged to 30V. If they are connected in parallel the amount of charge that flows from the smaller capacitor to higher capacitor in μ C is

A.
30
B.
60
C.
200
D.
250

Solution:

Amount of charge flowing = 10 x 40 − 10 x 34 = 60

QUESTION: 60

A condenser stores

A.
Potential
B.
Charge
C.
Current
D.
All

Solution:

QUESTION: 61

An infinite number of charge of equal magnitude q, but of opposite sign are placed along the X-axis at x = 1, x = 2, x = 4, x = 8... and so on. The electric potential at the point x = 0 due to these charge will be

A.
q/4πε₀
B.
2q/4πε₀
C.
14q/4πε₀
D.
q /3πε₀

Solution:

QUESTION: 62

A wire of length L metre, carrying a current I ampere is bent in the form of a circle. its magnitude of magnetic moment will be

A.
IL/(4π)
B.
IL²/(4π)
C.
I²L²/(4π)
D.
I²L/(4π)

Solution:

QUESTION: 63

In carbon cycle of fusion

A.
Four H₁¹ fuse to form He₂⁴ and two positrons
B.
Four H₁¹ fuse to form He₂⁴ and two electrons
C.
Two H₁² use to form He₂⁴
D.
Two H₁² fuse to form He₂⁴ and two neutrons

Solution:

QUESTION: 64

The source of stellar energy is

A.
Nuclear fission
B.
Nuclear fusion
C.
Excitation of electrons
D.
Thermionic emission

Solution:

QUESTION: 65

Neutrino emission in β decay was predicted theoretically by

A.
Planck
B.
Heisenberg
C.
Laue
D.
Pauli

Solution:

QUESTION: 66

Which one of the following is true in photoelectric emission

A.
photoelectric current is directly proportional to the amplitude of ight of a given frequency
B.
photoelectric current is directly proportional to the intensity of light of a given frequency at moderate intensities
C.
Above the threshold frequency, the maximum K.E. of photoelectrons is inversely proportional to the frequency of incident light
D.
The threshold frequency depends upon the wavelength of incident light

Solution:

QUESTION: 67

An image of the sun is formed by a lens of focal length 30 cm on the metal surface of a photoelectric cell and a photoelectric current (I) is produced. The lens forming the image is then replaced by another of the same diameter but of focal length of 15 cm. The photelectric current in this case is

A.
I/2
B.
I
C.
2 I
D.
4 I

Solution:

QUESTION: 68

A ray of light is incident on a surface of glass slab at an angle 45⁰ . If the lateral shift produced per unit thickness is 1/√3 m, the angle of refraction produced is

Solution:

QUESTION: 69

A light incident at 60⁰ on one of the faces of a 30⁰prism experiences a deviation of 30⁰ . The angle made by the light beam with the second face is

A.
0⁰
B.
90⁰
C.
30⁰
D.
60⁰

Solution:

QUESTION: 70

The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be

A.
100
B.
90
C.
10
D.
1.25

Solution:

QUESTION: 71

The width of forbidden gap in silicon crystal is 1.1 eV. When the crystal is converted into a n - type semiconductor, the distance of fermi level from conduction band is

A.
Greater than 0.55 eV
B.
Equal to 0.55 eV
C.
Less than 0.55 eV
D.
Equal to 1.1 eV

Solution:

QUESTION: 72

In a properly biased transistor

A.
both depletion layers are equally large
B.
both depletion layers are equally small
C.
emitter-base depletion layer is large but base-collector depletion layer is small
D.
emitter-base depletion layer is small but base-collector depletion layer is large

Solution:

QUESTION: 73

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

A.
Donar
B.
Acceptor
C.
Intrinsic
D.
Extrinsic

Solution:

QUESTION: 74

On increasing the reverse bias to a large value in a P-N junction diode current

A.
remains fixed
B.
increases slowly
C.
suddenly increases
D.
decreases slowly

Solution:

QUESTION: 75

In p-type semiconductors conduction is due to

A.
greater number of holes and less number of electrons
B.
only electrons
C.
only holes
D.
greater number of electrons and less number of holes

Solution:

QUESTION: 76

In a P-type semiconductor, germanium is doped with

A.
Boron
B.
Gallium
C.
Aluminium
D.
All of these

Solution:

QUESTION: 77

Two sources of same intensity interfere at a point and produced resultant I. When one source is removed, the intensity at that point will be

A.
I
B.
I/2
C.
I/4
D.
I/3

Solution:

QUESTION: 78

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

A.
3 : 1
B.
1 : 3
C.
9 : 1
D.
1 : 9

Solution:

QUESTION: 79

For which property are electrons used in an electron microscope?

A.
wave nature
B.
negative charge
C.
spin
D.
none of these

Solution:

QUESTION: 80

In Young's double slit experiment, two slits are made 5 mm apart and the screen is placed 2 m away. What is the fringe separation when light of wavelength 500 nm is used?

A.
0.002 mm
B.
0.02 mm
C.
0.2 mm
D.
2 mm

Solution:

QUESTION: 81

Zerewitnoff's determination of active hydrogen in a compound is based upon its reaction with

A.
Na
B.
CH₃MgI
C.
Zn
D.
Al

Solution:

QUESTION: 82

At room temperature formaldehyde is

A.
Gas
B.
Liquid
C.
Solid
D.
None of the above

Solution:

QUESTION: 83

The general order of reactivity of carbonyl compounds towards nucleophilic addition reactions is?

A.
H₂C═ O > RCHO > ArCHO > R₂C═ O > Ar₂C═O
B.
ArCHO > Ar₂C═O > RCHO═ O > R₂C═O > H₂C═O
C.
Ar₂C═O > R₂C═O > ArCHO > RCHO > H₂C═ O
D.
None of these

Solution:

QUESTION: 84

A compound A has molecular formula C₂Cl₃OH. It reduce Fehling's solution and on oxidation gives a monocarboxylic acid B. A is obtained by the action of Cl₂ on ethyl alcohol. A is

A.
Chloral
B.
Chloroform
C.
Chloromethane
D.
Chloroacetic acid

Solution:

QUESTION: 85

Pure methane can be produced by

A.
Wurtz reaction
B.
Kolbe's electrolytic method
C.
Soda-lime decarboxylation
D.
Reduction with H₂.

Solution:

QUESTION: 86

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

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

Solution:

QUESTION: 87

Vitamin A is called

A.
ascorbic acid
B.
retinol
C.
calciferol
D.
tocopherol

Solution:

QUESTION: 88

The most stable carbonium ion is:

A.
Methyl carbonium ion
B.
Primary carbonium ion
C.
Secondary carbonium ion
D.
Tertiary carbonium ion

Solution:

QUESTION: 89

The conversion of Cl ― CH ═ CH ― Cl to Cl₂CH ― CHCl₂ can be carried out with

A.
Cl₂
B.
Cl₂/hv
C.
Cl₂/AlCl₃
D.
Cl₂/aq.NaOH

Solution:

QUESTION: 90

An example of zwitterion is

A.
alanine
B.
glycine hydrochloride
C.
urea
D.
ammonium acetate

Solution:

QUESTION: 91

The bond that determines the secondary structure of a protein is

A.
Co-ordinate bond
B.
Covalent bond
C.
Hydrogen bond
D.
Ionic bond

Solution:

QUESTION: 92

Saponification of ethyl benzoate with caustic soada as alkali,gives

A.
Benzyl alcohol ,ethanoic acid
B.
Sodium benzoate,ethanol
C.
Benzoic acid ,sodium ethoxide
D.
Phenol,ethanoic acid

Solution:

QUESTION: 93

Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. The ester is

A.
Methyl ethanoate
B.
Methyl methanoate
C.
Ethyl methanoate
D.
Methyl propenoate

Solution:

QUESTION: 94

The compound which reacts with Fehling solution is

A.
C₆H₅COOH
B.
HCOOH
C.
CH₃COCH₃
D.
CH₂Cl - CH₂Cl

Solution:

QUESTION: 95

In a reversible reaction, the catalyst

A.
increases activation energy of forward reaction
B.
decreases activation energy of forward reaction
C.
increases activation energy of backward reaction
D.
decreases activation energy of both forward and backward reactions

Solution:

QUESTION: 96

The equilibrium constant in a reversible chemical reaction at a given temperature

A.
depends on the initial concentration of the reactants
B.
depends on the concentration of one of the products at equilibrium
C.
does not depend on the initial concentrations of reactants
D.
is not characteristic of the reaction

Solution:

QUESTION: 97

The heat of combustion of methane at 298K is expressed by
CH₄ g + 2O₂ g → CO₂ g + 2 H₂O l , Δ H = − 890.2 k J . The magnitude of Δ E of the reaction at this temperature is

A.
Infinity
B.
Less than Δ H
C.
Equal to Δ H
D.
Greater than Δ H

Solution:

QUESTION: 98

The systematic name of (CH₃)₂CH-COOH is

A.
2-Propanoic acid
B.
Isobutanoic acid
C.
2-Methylpropanoic
D.
2-Methylbutanoic acid

Solution:

QUESTION: 99

In the reaction CH₂COOH_aq + OH_(aq) → CH₃COO^- + H₂O_(l) ; ΔH = -55.2kJ mol^-1 What is the heat of dissociation (in kJ mol^-1) of acetic acid?

A.
+ 2.1
B.
− 57.3
C.
− 35.1
D.
− 176.1

Solution:

ΔH = -55.2 KJ.mol^-1
-[H⁺ _(aq) + OH^- _(aq) → H₂O_(l) ΔH = -57.3 KJ .mol^-1]]

CH₂COOH_aq → CH₃COO^- _(aq) + H⁺ _(aq) ΔH = ?
CH₂COOH_(aq) + OH^- _(aq) → CH₃COO^- _(aq) + H₂O_(l) ΔH = -55.2 KJ .mol^-1
-H⁺ + OH^- _(aq) → - H₂O_(l) ΔH = + 57.3KJ .mol^-1
CH₃COOH_(aq) → CH₃COO^- _(aq) + H⁺_(aq) ΔH = 2.1 KJmol^-1

QUESTION: 100

An example of anthraquinone dye is

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

Solution:

QUESTION: 101

Consider the following reaction

C + O₂ → CO₂ , Δ H = − 400 k J ∕ mole
2H₂ + O₂ → 2 H₂O , Δ H = − 570 k J ∕ m o l e ;
CO₂ + 2 H₂O → CH₄ + 2O₂ , Δ H = 800 k J ∕ m o e
The heat of formation of methane is

A.
− 1860 kJ//mole
B.
− 1060 kJ/mole
C.
170 kJ/mole
D.
180 kJ/mole

Solution:

QUESTION: 102

In the diazotisation of aniline with sodium nitrite and hydrochloric acid, the excess of hydrochloric acid is used primarily to

A.
Supress the concentration of free aniline
B.
Supress the hydrolysis to phenol
C.
Ensure a stochiometric amount of nitrous acid
D.
Neutralise the base liberated

Solution:

QUESTION: 103

Among TiF₆^2-,Co₆^3-,Cu₂Cl₂ and Ni₄^4-(at.nos.:Ti=22, Co=27, Cu=29, Ni=28). The colourless species are

A.
CoF₆^3- and NiCl₄^2-
B.
TiF₆^2- and CoF₆^3-
C.
Cu₂Cl₂ and NiCl₄^2-
D.
TiF₆^2- and Cu₂Cl₂

Solution:

QUESTION: 104

The number of unpaired electrons calculated in [ Co(NH₃)₆]³⁺ and [ CoF₆ ]^3- are

A.
4 and 4
B.
0 and 2
C.
2 and 4
D.
0 and 4

Solution:

QUESTION: 105

Reduction of H₃C ― NC with hydrogen in the presence of Ni/Pt catalyst gives

A.
CH₃NH₂
B.
CH₃NHCH₃
C.
CH₃CH₂NH₂
D.
(CH₃)₃N

Solution:

QUESTION: 106

The e.m.f. of a galvanic cell with electrode potentials of silver equal to + 0.80 V and that of copper equal to + 0.34 V is

A.
- 0.46 V
B.
- 1.14 V
C.
+0.46 V
D.
+1.14 V

Solution:

QUESTION: 107

The pH of aqueous KCl solution is 7.0. This solution was electrolysed for a few seconds using Pt electrodes. Which of the following is correct?

A.
The pH of solution decreases
B.
The pH of solution increases
C.
Cl₂ is liberated at cathode
D.
The pH of solution remains the same

Solution:

QUESTION: 108

Ether which is liquid at room temperature is

A.
C₂H₅OCH₃
B.
CH₃OCH₃
C.
C₂H₅OC₂H₅
D.
None

Solution:

QUESTION: 109

The standard emf of the cell Zn + Cu²⁺→ Cu + Zn²is 1.10 V at 25⁰C. The emf of the cell when 0.1 M Cu²⁺ and 0.1 M Zn²⁺solutions are used will be

A.
1.10 V
B.
0.110 V
C.
-1.10 V
D.
-0.110 V

Solution:

QUESTION: 110

If the weight of 5.6 liters of a gas at N.T.P. is 11 gram. The gas may be

A.
PH₃
B.
COCl₂
C.
NO
D.
N₂O

Solution:

QUESTION: 111

In the manufacture of cement which of the following is used?

A.
Clay and silica
B.
Lime stone and silica
C.
Lime stone and clay
D.
Lime stone and gypsum

Solution:

QUESTION: 112

Which of the following is the best source of thallium?

A.
mica
B.
canallite
C.
alluminite
D.
flue dust

Solution:

QUESTION: 113

White phosphorus when boiled with strong solution of caustic soda produces :

A.
Sodium phosphide
B.
Sodium phosphate
C.
Phosphine
D.
Red phosphorus

Solution:

QUESTION: 114

Coordination number of Na⁺ in NaCl is

A.
3
B.
4
C.
5
D.
6

Solution:

QUESTION: 115

Which of the following is a redox reaction?

A.
NaCl + KNO₃ → NaNO₃ + KCl
B.
CaC₂O₄ + 2HCl → CaCl₂ + H₂C₂O₄
C.
Mg(OH)₂ + 2NH₄Cl → MgCl₂
D.
Zn + 2AgCN → 2Ag + Zn(CN)₂

Solution:

QUESTION: 116

Following compound A

A.
is a meso compound
B.
is a diastereomer
C.
is a threo-enantiomer
D.
is a trans-isomer

Solution:

QUESTION: 117

Which one of the following is an oxyacid ?

A.
Ba(OH)₂
B.
Mg(OH)₂
C.
H₃PO₃
D.
HCl

Solution:

QUESTION: 118

The CMC is the concentration at which

A.
micellization starts
B.
true solution is formed
C.
solute and solution form equilibrium
D.
one molar elecrolyte is present per 1000 g of solution

Solution:

QUESTION: 119

Which of the following contains maximum number of unpaired electrons?

A.
Mn²⁺
B.
Co²⁺
C.
Co³⁺
D.
Fe²⁺

Solution:

QUESTION: 120

Choose the correct answer of transition elements?

A.
Transition elements have low melting points
B.
Transition elements do not have catalytic activity
C.
Transition elements exhibit variable oxidation states
D.
Transition elements exhibit inert pair effect

Solution:

QUESTION: 121

Find the antonym of APPOSITE

A.
Inappropriate
B.
Intemperate
C.
Inconsistent
D.
Irregular

Solution:

QUESTION: 122

Find the Syonym of ARID

A.
unproductive
B.
useless
C.
withering
D.
dry

Solution:

QUESTION: 123

Fill in the blank with appropriate word.
The passengers and crew members of the aeroplane had a.......escape when it was taking off from the runway.

A.
narrow
B.
large
C.
little
D.
brief

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.

When the solider returned home after the war was over, his wife received him WITH OPEN HANDS.

A.
with open arms
B.
with unfolded hands
C.
with an open heart
D.
No improvement

Solution:

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Largest number of chloroplasts in the leaf is in

Spongy tissue

Palisade tissue

Guard cells

Bundle sheath

The main function of capillaries is to

Return blood to the hea

Prevent the backflow of blood.

Take blood away from the heart

Exchange nutrients and wastes with tissues

Glycolysis can not occur in the absence of

Ca

Mg

Mn

Co

Housefly

Bed Bug

Sand Fly

Fruit Fly

latex and oil

rubber and wood

oil and fibre

fibre and rubber

80 : 20

70 : 30

60 : 40

50 : 50

Phagocytosis

Pinocytosis

Diffusion

Osmosis

Plastids

Mitochondria

Golgi bodies

Endoplasmic reticulum

Grasslands

Savannahs

Deciduous forests

Tropical rain forests

Dissimilar origin and dissimilar structures

Dissimilar origin but similar functions

Similar origin with similar or dissimilar functions

Similar origin with dissimilar functions

Carboniferous period

Cretaceous period

Jurassic period

Devonian period

Leucosolenia-Hydra-amoeba-Ascaris

Ascaris-Amoeba-Leucosolenia-Hydra

Amoeba-Leucosolenia-Hydra-Ascaris

None of these

Rice

Wheat

Maize

Sugarcane

t-RNA

sigma factor

core enzyme

both '1' and '2'

UGU

UGA

UAG

UGG

Ti plasmid

Ri plasmid

recombinant palsmid

shine dolgano sequence

random distribution of Mendelian factors in the subsequent generations

pairing of homologous chromosomes

crossing over or genetic recombination

none of the above

Occurs in the first child

Produces a milder haemolytic disorder

Does not reqiure transfusion

All of these

No antigen

No antibody

Neither antigen nor antibody