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VITEEE PCBE Mock Test - 8

125 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE PCBE Mock Test - 8

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This mock test of VITEEE PCBE Mock Test - 8 for JEE helps you for every JEE entrance exam. This contains 125 Multiple Choice Questions for JEE VITEEE PCBE Mock Test - 8 (mcq) to study with solutions a complete question bank. The solved questions answers in this VITEEE PCBE Mock Test - 8 quiz give you a good mix of easy questions and tough questions. JEE students definitely take this VITEEE PCBE Mock Test - 8 exercise for a better result in the exam. You can find other VITEEE PCBE Mock Test - 8 extra questions, long questions & short questions for JEE on EduRev as well by searching above.

QUESTION: 1

The other name of cork cambium is

A.
Phellogen
B.
Phellem
C.
Rhizoderm
D.
Periderm

Solution:

QUESTION: 2

Spiders belong to

A.
lepidoptera
B.
chelicerobata
C.
trilobata
D.
none above

Solution:

QUESTION: 3

Structure of nuclear envelope facilitates

A.
Nucleocytoplasmic exchange of materials
B.
Spindle organisation
C.
Synapsis of homologous chromosomes
D.
Separartion of daughter chromosomes

Solution:

QUESTION: 4

The continuation of endoplasmic reticulum is with

A.
ribosome
B.
Golgi body
C.
mitochondria
D.
nuclear membrane

Solution:

QUESTION: 5

Jute is

A.
lignin
B.
suberin
C.
hemicellulose
D.
cellulose

Solution:

QUESTION: 6

What is true ?

A.
All Veins carry deoxygenated blood
B.
All arteries carry oxygenated blood
C.
All Veins except one carry oxygenated blood
D.
All arteries except one carry oxygenated blood

Solution:

QUESTION: 7

F₁-particles are present in

A.
nucleus
B.
chloroplast
C.
dictyosomes
D.
mitochondria

Solution:

QUESTION: 8

One of the major difficulties in the biological control of insect pests is the

A.
practical difficulty of introducing the predator to specific areas
B.
method is less effective as compared with the use of insecticides
C.
predator does not always survive when transferred to a new environment
D.
predator develops a preference to other diets and may itself become a pest

Solution:

QUESTION: 9

Maximum number in pond ecosystem is of

A.
Producers
B.
Consumers
C.
Top consumers
D.
Decomposers

Solution:

QUESTION: 10

Evolution is

A.
sudden appearance of unique characters
B.
sudden appearance of ancestral characters
C.
speciation and gradual change
D.
mutational changes

Solution:

QUESTION: 11

Which animal has become extinct recently?

A.
Draco
B.
Mammoth
C.
Dinosaur
D.
Pteridosperms

Solution:

QUESTION: 12

Parallelism is

A.
Adaptive divergence
B.
Adaptive divergence of widely separated species
C.
Adaptive convergence of widely different species
D.
Adaptive convergence of closely related groups

Solution:

QUESTION: 13

Nonsense codon takes part in

A.
Terminating message of gene controlled protein synthesis
B.
Formation of unspecified amino acids
C.
Conversion of sense DNA into non-sense one
D.
Releasing tRNA from polypeptide chain

Solution:

QUESTION: 14

Site for protein synthesis is

A.
Nucleus
B.
Cytosol
C.
Ribosome
D.
Lysosome

Solution:

QUESTION: 15

Length of mRNA that carries information for complete polypeptide synthesis is

A.
Muton
B.
Codon
C.
Operon
D.
Cristron

Solution:

QUESTION: 16

In Cucurbita, W is epistatic over Y and y gene normally responsible for yellow and green colour fruits. It produces white flowers. What is the ratio of fruits in the progeny of cross WwYy X wwYy?

A.
9 white : 7 yellow : 0 green
B.
3 white : 4 yellow : 1 green
C.
4 white : 3 yellow : 1 green
D.
2 white : 1 yellow : 1 green

Solution:

QUESTION: 17

tt mates which Tt. What will be characteristic of offspring?

A.
75% recessive
B.
50% recessive
C.
25% recessive
D.
All dominant

Solution:

QUESTION: 18

Mild hemolytic disease and jaundice of new born can be due to

A.
Rh factor
B.
Defective liver of mother
C.
ABO incompatibility
D.
Hypertensive mother

Solution:

QUESTION: 19

Queen Victoria was carrier of haemophilia, a sex-linked disease. What is true ?

A.
Queen's father must have had haemophilia
B.
All her daughters would have been carriers
C.
All of her sons would have had haemophilia
D.
Haemophilia would have occured more in her male than female descendants

Solution:

QUESTION: 20

Why cambium is considered a lateral meristem?

A.
Because it increases height and diameter of the plants
B.
Because it gives rise to lateral branches
C.
Because it increases girth of the plant
D.
Because it increases length of the plant

Solution:

QUESTION: 21

An antibody is

A.
Phagocyte
B.
Molecule that inactivates antigen
C.
Component RBC
D.
Component of blood

Solution:

QUESTION: 22

Cyclosporine is useful in

A.
Prophylactic for viruses
B.
Immunosuppressant
C.
Prophylactic for marasmus
D.
Treating allergic eczema

Solution:

QUESTION: 23

Active immunity is got from

A.
Antibodies
B.
Weakened germs in injection
C.
Live germs in injection
D.
Blood transfusion

Solution:

QUESTION: 24

Coconut's husk fibre coir of commerce is extracted from

A.
Epicarp
B.
Mesocarp
C.
Endocarp
D.
Seed coat

Solution:

QUESTION: 25

A plant is kept in 300 ppm CO₂ concentration.What will happen to it

A.
Plant will die soon
B.
Plant will not grow but will not die
C.
Plant will show normal photosynthesis
D.
Respiration will be greatly decreased

Solution:

QUESTION: 26

The tallest plant out of the following is

A.
Sequoia
B.
Eucalyptus
C.
Pinus
D.
Casuarina

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

Yogurt is formed by

A.
Lactobacillus bulgaricus
B.
Streptococcus thermophilus
C.
both above
D.
none above

Solution:

QUESTION: 29

Peeling of ozone umbrella is due to

A.
CFCs
B.
PAN
C.
CO₂
D.
Coal burning

Solution:

QUESTION: 30

Elongated lignified cells with pointed end walls belong to

A.
Collenchyma
B.
Sclereids
C.
Sclerenchyma
D.
Parenchyma

Solution:

QUESTION: 31

The formation of ozone hole is maximum over

A.
India
B.
Africa
C.
Europe
D.
Antarctica

Solution:

QUESTION: 32

Which of the following radioactive isotopes is used in the detection of thyroid cancer?

A.
iodine-131
B.
carbon-14
C.
uranium-238
D.
phosphorus-32

Solution:

QUESTION: 33

Entamoeba histolytica does not have or differs from Amoeba in the absence of :

A.
Nucleus
B.
Contractile vacuole
C.
Food vacuole
D.
Pseudopodia

Solution:

QUESTION: 34

A woman who exhibits male secondary sexual characteristics may have a tumor in her

A.
Ovary
B.
Pancreas
C.
Thrroid gland
D.
Adrenal gland

Solution:

QUESTION: 35

Study of fungi is called

A.
Phycology
B.
Mycology
C.
Palynology
D.
Malacology

Solution:

QUESTION: 36

Which one does not favour Lamarckian concept of inheritance of acquired characters?

A.
Lack of pigment in cave dwellers
B.
Absence of limbs in snakes
C.
Presence of webbed toes in aquatic birds
D.
Melanisation of Peppered Moth in industrial areas

Solution:

QUESTION: 37

Founder of palaentology is

A.
Lamarck
B.
E.Darwin
C.
G.Cuvier
D.
Empedocles

Solution:

QUESTION: 38

The scientist who proposed the first theory of evolution was

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

Solution:

QUESTION: 39

Blood entering the kidney is filtered by the

A.
Glomerulus
B.
Distal tubule
C.
Loop of Henle
D.
Collecting duct

Solution:

QUESTION: 40

The inability to regulate the concentration of sodium ions in the blood could be due to improper functioning of the

A.
adrenal cortex, since it Produces A
B.
Adrenal cortex, since it produces aldosterone
C.
Adrenal medulla, since it produces ADH
D.
Adrenal medulla, since it Produces aldosterone.

Solution:

QUESTION: 41

In an AC series circuit, the instantaneous current is maximum when the instantaneous voltage is maximum. The circuit element connected to the source will be

A.
pure inductor.
B.
pure capacitor.
C.
pure resistor.
D.
combination of a capacitor and an inductor.

Solution:

QUESTION: 42

The photons of energies twice and thrice the work function of a metal are incident on the metal surface. Then the ratio of maximum velocities of the photo electrons emited in the two cases respectively is

A.
√2 : 1
B.
√3 : 3
C.
√3 : √2
D.
1 : √ 2

Solution:

QUESTION: 43

An electron beam is subjected to perpendicular electric and magnetic fields of 5 x 10^-4 wbm^-2 and 3 x 10³ Vm^-1resectively. If there is no deflection, the velocity of electrons is

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

Solution:

QUESTION: 44

A 10 μ F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference 20 volt. The capacitance of second capacitor is

A.
15 μ F
B.
30 μ F
C.
20 μ F
D.
10 μ F

Solution:

QUESTION: 45

The negative Zn pole of Daniell cell, sending a constant current through a circuit, decreases in mass by 0.13g in 30 min. If the electrochemical equivalent of Zn and Cu are 32.5 and 31.5 respectively, the increase in the mass of the positive Cu pole in this time is

A.
0.180g
B.
0.141g
C.
0.126g
D.
0.242g

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

If the resistance of a conductor is 5 Ω at 50^oC and 7 Ω at 100^oC, then the mean temperature coefficient of resistance of the material is

A.
0.001^oC^-1
B.
0.004^oC^-1
C.
0.006^oC^-1
D.
0.008^oC^-1

Solution:

QUESTION: 48

A 6 V battery is connected to the terminals of a 3 m long wire of uniform thickness and of resistance 100 Ω. The potential difference between two points on the wire, separated by a distance of 50 cm will be

A.
1.5 V
B.
2 V
C.
3 V
D.
1 V

Solution:

QUESTION: 49

The current flowing through a wire depends on time as I = 3t² + 2t +5. The charge flowing through the cross-section of the wire in time from t = 0 to t = 2 sec. is

A.
22C
B.
20C
C.
18C
D.
5C

Solution:

QUESTION: 50

Two resistors whose value are in ratio 2 : 1 are connected in parallel with one cell. Then ratio of power dissipated is

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

Solution:

QUESTION: 51

The Production of X-rays is due to

A.
The collision of electrons with the target atom due to transfer of momentum
B.
The collision of electrons with the target atom due to transfer of energy
C.
The transition of electrons of heavy target atoms from high to low energy level on striking with electrons
D.
None of these

Solution:

QUESTION: 52

A generator at a utility company produces 100 A of current at 4000 V. The voltage is stepped up to 240000 V by a transformer before it is sent on a high voltage transmission line. The current in transmission line is

A.
3.67 A
B.
2.67 A
C.
1.67 A
D.
2.40 A

Solution:

QUESTION: 53

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

A.
same
B.
three times
C.
six times
D.
nine times

Solution:

QUESTION: 54

If the no. of turns of a solenoid are doubled and its length is halved keeping the area of cross-section same, then ratio of initial and final self-inductances will be

A.
4:1
B.
1:4
C.
1:8
D.
8:1

Solution:

QUESTION: 55

Eight dipoles of charges of magnitude e are placed inside a cube. The total electric flux coming out of the cube will be

A.
8 e/∈₀
B.
16 e/∈₀
C.
e/∈₀
D.
zero

Solution:

QUESTION: 56

Maxwell in his famous equation of electromagnetism introduced the concept of

A.
a.c.current
B.
d.c.current
C.
displacement current
D.
impedance

Solution:

QUESTION: 57

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

Solution:

QUESTION: 58

A charge of 5 C is given a displacement of 0.5 m. The work done in the process is 10 J. The potential difference between the two points will be

A.
25 V
B.
1 V
C.
0.25 V
D.
2 V

Solution:

QUESTION: 59

If an unchanged capacitor is charged by connecting it to a battery, then the amount of energy lost as heat is

A.
Q V
B.
Q V²
C.
1/2Q V
D.
1/2Q V²

Solution:

QUESTION: 60

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]

Solution:

QUESTION: 61

A parallel plate capacitor filled with a dielectric of relative permittivity 5 between its plates is charged to acquire an energy E and isolated. If the dielectric is replaced by another of relative permittiviey 2, its energy becomes

A.
E
B.
0.4 E
C.
2.5 E
D.
6.25 E

Solution:

E ∝ 1/k

QUESTION: 62

Magnetic effect of current was discovered by

A.
Faraday
B.
Oersted
C.
Ampere
D.
Bohr

Solution:

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

A.
1/e²
B.
1/e
C.
e
D.
e²

Solution:

QUESTION: 64

To generate a power of 3.2 mega watt, the number of fissions of U²³⁵ per minute is (Energy released per fission = 200MeV, 1eV = 1.6 x 10^-19 J)

A.
6 x 10¹⁸
B.
6 x 10¹⁷
C.
10¹⁷
D.
6 x 10¹⁶

Solution:

QUESTION: 65

The electron emitted in beta radiation originates from

A.
inner orbits of atoms.
B.
free electron existing in nuclei.
C.
decay of neutron in the nucleus.
D.
photon escaping from the nucleus

Solution:

QUESTION: 66

When the light source is kept 20 cm away from a photo cell, stopping potential 0.6 V is obtained. When source is kept 40 cm away, the stopping potential will be

A.
0.3 V
B.
0.6 V
C.
1.2 V
D.
2.4 V

Solution:

QUESTION: 67

The threshold wavelength is 2000Å. The work function is

A.
6.2 V
B.
6.2 eV
C.
6.2 MeV
D.
6.2 KeV

Solution:

QUESTION: 68

Fraunhofer lines are due to

A.
Absorption by chromosphere of the light emitted by photosphere
B.
Absorption by photosphere of the light emitted by chromosphere
C.
Light emitted by photosphere
D.
Light emitted by chromosphere

Solution:

QUESTION: 69

Light appears to travel in a straight line, because

A.
frequency of light is very small
B.
wavelength of light is very small
C.
light consists of very small particles
D.
velocity is different for different colours

Solution:

QUESTION: 70

In a p-n junction

A.
both p and n-regions have same potential
B.
high potential at n-region and low potential at p-region
C.
high potential at p-region and low potential at n-region
D.
low potential at n-region and zero potential at p-region

Solution:

QUESTION: 71

When triode is used as an amplifier, the phase difference between the input voltage and output is

A.
0⁰
B.
π/2
C.
π
D.
2π

Solution:

QUESTION: 72

Fermi level in an intrinsic semiconductor lies

A.
Close to conduction band
B.
Close to valence band
C.
Midway between conduction and valence bands
D.
None

Solution:

QUESTION: 73

At OK temperature, a p-type semiconductor

A.
does not have any charge carriers
B.
has few holes but no free electrons
C.
has few holes and few free electrons
D.
has equal number of holes and free electrons

Solution:

QUESTION: 74

Semiconductor is damaged by the strong current due to

A.
Lack of free electron
B.
Excess of electrons
C.
Excess of proton
D.
None of these

Solution:

QUESTION: 75

To make P-type semiconductor, the impurity to be mixed with pure germanium will be

A.
Phosphorus
B.
Silver
C.
Antinomy
D.
Aluminium

Solution:

QUESTION: 76

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: 77

When Ge crystals are doped with phosphorus atom, then it becomes

A.
Insulator
B.
P-type
C.
N-type
D.
Superconductor

Solution:

QUESTION: 78

The phase difference between two waves reaching a point is π/2 . If the individual amplitudes are 3mm and 4mm, the resultant amplitude is

A.
1mm
B.
7mm
C.
5mm
D.
None of these

Solution:

QUESTION: 79

If Young's double slit experiment of light, interference is performed in water, which one of the following is correct?

A.
Fringe width will decrease.
B.
Fringe width will increase.
C.
There will be no fringe.
D.
Fringe width will remain unchanged.

Solution:

QUESTION: 80

A Nicol prism can be used

A.
Only to analyse polarised light
B.
For producing and analysing polarised light
C.
Only to produce polarised light
D.
None

Solution:

QUESTION: 81

Ethyl alcohol can be used for preparation of which of the following?

A.
Ethyl acetate
B.
Ethylene
C.
Acetic acid
D.
All these compounds

Solution:

QUESTION: 82

The most reactive compound towards formation of cyanohydrin on treatment with KCN followed by acidification is

A.
Benzaldehyde
B.
p-Nitrobenzaldehyde
C.
Phenylacetaldehyde
D.
p-Hydroxybenzaldehyde

Solution:

QUESTION: 83

The organic compound which will answer the Fehling solution test is

A.
Ethanol
B.
Acetone
C.
Maltose
D.
Benzaldehyde

Solution:

QUESTION: 84

The reagent(s) which can be used to distinguish acetophenone from benzophenone is (are)

A.
2, 4-Dinitrophenylhydrazine
B.
Aqueous solution of NaHSO₃
C.
benedict reagent
D.
I₂ and Na₂CO₃

Solution:

QUESTION: 85

Both methane and ethane can be prepared in one step by the reaction of

A.
C₂H₄
B.
CH₃OH
C.
CH₃Br
D.
CH₃CH₂OH

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

2g of oxygen contains number of atoms equal to that in

A.
0.5 g of hydrogen
B.
4 g of sulphur
C.
7 g of nitrogen
D.
2.3 g of sodium

Solution:

QUESTION: 88

Hydrolysis of proteins in the presence of enzymes produces:

A.
Hydroxy acids
B.
Dicarboxylic acids
C.
Amino acids
D.
Aromatic acids

Solution:

QUESTION: 89

How many moles of Helium gas occupy 22.4 L at 0^oC at 1 atm. pressure?

A.
0.11
B.
0.90
C.
1.0
D.
1.11

Solution:

QUESTION: 90

The hormone which controls the process like burning of fats, proteins and carbohydrates to liberate energy in the body is

A.
cortisone
B.
thyroxine
C.
adrenaline
D.
insulin

Solution:

Thyroxine is a hormone secreted by thyroid gland.
This hormone controls various biochemical reactions involving burning of proteins carbohydrates, fats to release energy.

QUESTION: 91

Which of the following compounds is responsible for the transmission of heredity characters?

A.
RNA
B.
DNA
C.
Glucose
D.
Haemoglobin

Solution:

QUESTION: 92

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: 93

In which of the following, the number of carbon atoms does not remain same when carboxylic acid is obtained by oxidation

A.
CH₃COCH₃
B.
CCl₃CH₂CHO
C.
CH₃CH₂CH₂OH
D.
CH₃CH₂CHO

Solution:

QUESTION: 94

A colourless liquid at room temperature reacts with soda lime to form sodium salt of carboxylic acid and ammonia gas.The liquid is

A.
Propamamide
B.
Propanic acid
C.
Formamide
D.
Methyl ethanoate

Solution:

QUESTION: 95

Which relation is correct?

A.
∆G = ∆H-T∆S
B.
∆G = ∆H+T∆S
C.
∆G = T∆S-∆H
D.
∆G = ∆H+S∆T

Solution:

QUESTION: 96

1 mole of N₂ and 2 moles of H₂ are allowed to react in a 1 dm³ vessel. At equilibrium 0.8 mole of NH₃ is formed. The concentration of H₂ in the vessel is

A.
0.6 mole
B.
0.8 mole
C.
0.2 mole
D.
0.4 mole

Solution:

QUESTION: 97

In a reversible reaction, two substances are in equilibrium. If the concentration of each one is reduced to half, the equilibrium constant will be

A.
reduced to half of its original value
B.
doubled
C.
same
D.
reduced to one fourth its original value

Solution:

QUESTION: 98

In which of the following neutralization reaction, the heat of neutralisation will be highest?

A.
NH₄OH and H₂SO₄
B.
HCl and NaOH
C.
CH₃COOH and KOH
D.
H₂C₂O₄ + KOH

Solution:

QUESTION: 99

Given C(s) + O₂(g) → CO₂(g) ; ∆H = −395kJ, S(s) + O₂(g) → SO₂(g);∆H = −295kJ , CS₂(l) + 3O₂(g) → CO₂(g) + 2SO₂(g) ; ∆H = −1110kJ. The heat of formation of CS₂(l) is

A.
125 kJ mol^-1
B.
31.25 kJ mol^-1
C.
62.5 kJ mol^-1
D.
250 kJ mol^-1

Solution:

QUESTION: 100

Aspirin is a/an

A.
Antibiotic
B.
Antipyretic
C.
Antiseptic
D.
None of these

Solution:

QUESTION: 101

The most stable conformation of n-butane is

A.
Skew boat
B.
Eclipsed
C.
Gauche
D.
Staggered-anti

Solution:

QUESTION: 102

Formula of sodium nitroprusside is :

A.
Na₂[ Fe(CN)₃ NO ]
B.
Na₃[ Fe(CN)₅NO]
C.
Na₂ [ Fe(CN)₅NO]
D.
Na₄[ Fe(CN)₄NO]

Solution:

QUESTION: 103

In the presence of acid, the hydrolysis of methyl cyanide gives

A.
Methanoic acid
B.
Ethanoic acid
C.
Methylamine
D.
Methyl alcohol

Solution:

QUESTION: 104

Atomic numbers of Cr and Fe are respectively 24 and 26. Which of the following is paramagnetic?

A.
[Cr(CO)₆]
B.
[Fe(CO)₅]
C.
[Fe(CN)₆]^3-
D.
[Cr(NH₃)₆]³⁺

Solution:

Cr(CO)₆ → Cr⁰ [Ar]3d⁶ 4s⁰

no unpaired electron
[Cr(NH₃)₆]³⁺ → Cr³⁺ [Ar]3d³
Ammonia is a weak field ligand there are three unpaired electrons present
Fe(CO)₅ → Fe⁰ [Ar]3d⁶ 4s²
CO is a strong field ligand, therefore

[Fe(CN₆)]^4- → Fe²⁺ [Ar]3d³
CN^- is a strong field ligand, therefore

QUESTION: 105

The unit of specific conductivity is

A.
ohm cm^-1
B.
ohm cm^-1
C.
ohm^-1 cm
D.
ohm^-1cm^-1

Solution:

QUESTION: 106

Chlorine cannot displace

A.
Fluorine from NaF
B.
Iodine from NaI
C.
Bromine from NaBr
D.
None of these

Solution:

QUESTION: 107

Hinsberg reagent is

A.
C₆H₅SO₃H
B.
C₂H₅NO
C.
C₆H₅SO₂Cl
D.
C₆H₅N₂Cl

Solution:

QUESTION: 108

The standard reduction potentials of Ag, Cu, Co and Zn are 0.799, 0.337, -0.277 and -0.762 V respectively. Which of the following cells will have maximum cell EMF?

A.
Zn | Zn⁺² (1M) ∥ Cu⁺² (1M) | Cu
B.
Zn | Zn⁺² (1M) ∥ Ag⁺¹ (1M)| Ag
C.
Cu⁺² (1M) | Cu ∥ Ag⁺¹ (1M)| Ag
D.
Zn | Zn⁺² (1M) ∥ Co⁺¹(1M) | Co

Solution:

QUESTION: 109

Anisole with HNO₃ and conc. H₂SO₄ gives

A.
Phenol
B.
Nitrobenzene
C.
o- and p-Nitroanisole
D.
o-Nitroanisole

Solution:

QUESTION: 110

Purification of silicon element used in semiconductors is done by

A.
Zone refining
B.
Froth floatation
C.
Heating
D.
Heating in vaccum

Solution:

QUESTION: 111

Which of the following oxides is the most acidic ?

A.
N₂O₅
B.
P₂O₅
C.
As₂O₅
D.
Sb₂O₅

Solution:

QUESTION: 112

The strongest reducing agent is

A.
K
B.
Mg
C.
Al
D.
Br

Solution:

QUESTION: 113

In CsCl structure, each Cs⁺ ion is surrounded by

A.
4Cl⁻ ions
B.
6Cl⁻ ions
C.
8Cl⁻ ions
D.
12Cl⁻ ions

Solution:

QUESTION: 114

Of the following compounds, the most acidic is

A.
As₂O₃
B.
P₂O₅
C.
Sb₂O₃
D.
Bi₂O₃

Solution:

QUESTION: 115

Air at sea level is dense. This is a practical application of

A.
Boyle's law
B.
Charle's law
C.
Avogadro's law
D.
Dalton's law

Solution:

QUESTION: 116

Silicon is an important constituent of

A.
Rocks
B.
Minerals
C.
Alloys
D.
Vegetables

Solution:

QUESTION: 117

Galvanization of iron denotes coating with

A.
Al
B.
Sn
C.
Cd
D.
Zn

Solution:

QUESTION: 118

Cellulose dispersed in ethanol is called

A.
emulsion
B.
micelle
C.
collodion
D.
hydrophilic sol

Solution:

QUESTION: 119

Following compound A

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

Solution:

QUESTION: 120

When calomel reacts with ammonium hydroxide, we get

A.
HgNH₂Cl
B.
NH₂ - Hg - Hg - Cl
C.
Hg₂O
D.
HgO

Solution:

QUESTION: 121

Fill in the blank with appropriate word.
Kavita.......a sum of Rs. 200 out of the bank every Monday

A.
extracts
B.
draws
C.
obtains
D.
pulls

Solution:

QUESTION: 122

Find the antonym of QUELL

A.
praise
B.
recommend
C.
incite
D.
contract

Solution:

QUESTION: 123

Find the synonym of PORTRAY

A.
Communicate
B.
Paint
C.
Express
D.
Draw

Solution:

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.

A.
helped
B.
surrounded
C.
visited
D.
criticised

Solution:

QUESTION: 125

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

ANY ABLE BODIED MAN eligible for the job.

A.
any able-bodied men are
B.
each able-bodied man is
C.
anyable-bodied men have been
D.
No improvement

Solution:

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The other name of cork cambium is

Phellogen

Phellem

Rhizoderm

Periderm

Spiders belong to

lepidoptera

chelicerobata

trilobata

none above

Structure of nuclear envelope facilitates

Nucleocytoplasmic exchange of materials

Spindle organisation

Synapsis of homologous chromosomes

Separartion of daughter chromosomes

ribosome

Golgi body

mitochondria

nuclear membrane

lignin

suberin

hemicellulose

cellulose

All Veins carry deoxygenated blood

All arteries carry oxygenated blood

All Veins except one carry oxygenated blood

All arteries except one carry oxygenated blood

nucleus

chloroplast

dictyosomes

mitochondria

practical difficulty of introducing the predator to specific areas

method is less effective as compared with the use of insecticides

predator does not always survive when transferred to a new environment

predator develops a preference to other diets and may itself become a pest

Producers

Consumers

Top consumers

Decomposers

sudden appearance of unique characters

sudden appearance of ancestral characters

speciation and gradual change

mutational changes

Draco

Mammoth

Dinosaur

Pteridosperms

Adaptive divergence

Adaptive divergence of widely separated species

Adaptive convergence of widely different species

Adaptive convergence of closely related groups

Terminating message of gene controlled protein synthesis

Formation of unspecified amino acids

Conversion of sense DNA into non-sense one

Releasing tRNA from polypeptide chain

Nucleus

Cytosol

Ribosome

Lysosome

Muton

Codon

Operon

Cristron

9 white : 7 yellow : 0 green

3 white : 4 yellow : 1 green

4 white : 3 yellow : 1 green

2 white : 1 yellow : 1 green

75% recessive

50% recessive

25% recessive

All dominant

Rh factor

Defective liver of mother

ABO incompatibility

Hypertensive mother

Queen's father must have had haemophilia

All her daughters would have been carriers

All of her sons would have had haemophilia