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VITEEE PCBE Mock Test - 9

125 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE PCBE Mock Test - 9

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This mock test of VITEEE PCBE Mock Test - 9 for JEE helps you for every JEE entrance exam. This contains 125 Multiple Choice Questions for JEE VITEEE PCBE Mock Test - 9 (mcq) to study with solutions a complete question bank. The solved questions answers in this VITEEE PCBE Mock Test - 9 quiz give you a good mix of easy questions and tough questions. JEE students definitely take this VITEEE PCBE Mock Test - 9 exercise for a better result in the exam. You can find other VITEEE PCBE Mock Test - 9 extra questions, long questions & short questions for JEE on EduRev as well by searching above.

QUESTION: 1

A hundred year old tree of temperate area will show

A.
Irregular number of rings which show increase or decrease along the length
B.
More then 100 rings at the base and less than 100 near the top
C.
100 rings at the base and progressive decrease towards the top
D.
100 rings from base to top

Solution:

QUESTION: 2

Ten pairs of spiracles with trachea are present in

A.
Star fish
B.
Cockroach
C.
Earthworm
D.
Frog

Solution:

QUESTION: 3

Genophore/bacterial genome or nucleoid is made of

A.
Histones and nonhistones
B.
RNA and histones
C.
A single double stranded DNA
D.
A single stranded DNA

Solution:

QUESTION: 4

Robert Brown discovered

A.
Cell wall
B.
Mitochondria
C.
Nucleolus
D.
Nucleus

Solution:

QUESTION: 5

The division of the plant kingdom into prokaryota and eukaryota is based on the characters of

A.
nucleus only
B.
chromosomes only
C.
cell organelles only
D.
all above

Solution:

QUESTION: 6

The highest blood pressure in the aorta occurs when the

A.
Atria contract
B.
Heart muscle is relaxed
C.
Blood is pushed to the ventricle
D.
Blood is pumped from the heart

Solution:

QUESTION: 7

Calcium gives rigidity to bones and teeth alongwith

A.
Pectate
B.
Carbonate
C.
Phosphate
D.
Sulphate

Solution:

QUESTION: 8

International Rice Research Institute (IRRI) is located at

A.
Tokyo (Japan)
B.
Hyderabad (India)
C.
New York (U.S.A.)
D.
Manila (Philippines)

Solution:

QUESTION: 9

Vestigial organ of python is

A.
Teeth
B.
Hind limbs
C.
Scales
D.
Nose

Solution:

QUESTION: 10

The ecosystem of a pond is referred as

A.
lotic
B.
lentic
C.
xeric
D.
benthic

Solution:

QUESTION: 11

Which of the following can you call atavism?

A.
wings of bat
B.
fins of fish
C.
cervical fistula of man
D.
flippers of whale

Solution:

QUESTION: 12

The modern horse is known as

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

Solution:

QUESTION: 13

Reverse transcription was discovered by

A.
Beadle and Tatum
B.
Temin and Baltimore
C.
Watson and Crick
D.
Khorana

Solution:

QUESTION: 14

tRNA has the function of

A.
Transcription
B.
Adopter for attaching amino acids over mRNA template
C.
Transferring information to mRNA
D.
Carry genetic code to cytoplasm

Solution:

QUESTION: 15

The Ti plasmid is often used for making transgenic plants. This plasmid is found in

A.
Azotobacter
B.
Agrobacterium
C.
yeast as a 2μ plasmid
D.
roots of legumionus plants

Solution:

QUESTION: 16

Which contributed to the success of Mendel?

A.
Qualitative analysis of data
B.
Observation of distinct inherited traits
C.
His knowledge of biology
D.
Consideration of one character at one time

Solution:

QUESTION: 17

A pregnant woman underwent amniocentesis. An extra barr body is present in the embryo. Syndrome likely to occur in child is

A.
Klinefelter's syndrome
B.
Down's syndrome
C.
Edward's syndrome
D.
Patau's syndrome

Solution:

QUESTION: 18

When one gene hides the effect of another gene, the interaction factor is known as :

A.
epistatic factor
B.
duplicate factor
C.
complementary factor
D.
supplementary factor

Solution:

QUESTION: 19

Huntington's chorea is characterised by

A.
Incongruant muscle movement
B.
Disordered muscle movement and mental deterioration
C.
Weak eye sight and hearing power
D.
Inability to speak

Solution:

QUESTION: 20

Binding of antigen to antibody is through

A.
Electrostatic interactions
B.
Covalent bonds
C.
Disulphide bridges
D.
Amide formation

Solution:

QUESTION: 21

Blood group AB has

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

Solution:

QUESTION: 22

O blood group is universal donor because the blood has

A.
Antigen A
B.
Antigen B
C.
Both antigen A and B
D.
No antigens

Solution:

QUESTION: 23

A fibrous root system is adapted better than tap root system to perform the function of

A.
Transport of water and organic food
B.
Absorption of water and minerals
C.
Anchorage of plant into the soil
D.
Storage of food

Solution:

QUESTION: 24

Which of the following pair does not match?

A.
Epiphytic roots - vanda
B.
Velamen in roots - absorption of moisture from air
C.
Climbing roots - ficus
D.
Sucking roots - carrot

Solution:

QUESTION: 25

The loss of which will harm the tree most?

A.
Bark
B.
Half the leaves
C.
Half the branches
D.
All the above

Solution: Bark contains the phloem that carries nutrition for the plant from the leaves

QUESTION: 26

Exarch and polyarch vascular bundles occur in

A.
Monocot stem
B.
Dicot stem
C.
Monocot root
D.
Dicot root

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

Hybridomas are result of

A.
fusion of gametic cells and tumour cells
B.
nuclear fussion
C.
cytoplasmic fusion
D.
none above

Solution:

QUESTION: 29

Noise becomes uncomfortable above

A.
180 dB
B.
140 dB
C.
100 dB
D.
80 dB

Solution:

QUESTION: 30

Which constitutes the thickening in collenchyma

A.
Suberin
B.
Cutin
C.
Pectin
D.
Lignin

Solution:

QUESTION: 31

BOD is measure of

A.
Industrial waste being poured in water body
B.
Extent of pollution with organic compounds
C.
CO combined with haemoglobin
D.
O₂ required by green plants during night

Solution:

QUESTION: 32

Use of pesticides is problematic as

A.
Their residues persist in water and environment
B.
Mosquitoes have become resistant to DDT
C.
Kill silkworms
D.
Deform gills of some fishes

Solution:

QUESTION: 33

Protozoa reproduce by several methods. Which protozoan reproduces both by binary fission and conjugation?

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

Solution:

QUESTION: 34

The presence of human chorionic gonadotropin (HCG) in a woman’s urine indicates that she

A.
Is pregnant
B.
Has just ovulated
C.
Is about to menstruate
D.
Has decreased estrogen levels

Solution:

QUESTION: 35

Father of biology is

A.
Aristotle
B.
Theophrastus
C.
Linnaeus
D.
Lamarck

Solution:

QUESTION: 36

'Ontogeny recapitulates phylogeny'. This is

A.
Pauling law
B.
Hardy weinberg law
C.
biogenetic law
D.
Thomas law

Solution:

QUESTION: 37

The importance of random accumulation of small genetic changes sufficient to explain evolution was given by

A.
Haeckel
B.
Mayr
C.
Darwin
D.
Lamarck

Solution:

QUESTION: 38

Phenomenon of industrial melanism proves

A.
Natural selection
B.
Reproductive isolation
C.
Induced mutation
D.
Geographical isolation

Solution:

QUESTION: 39

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

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

Solution:

QUESTION: 40

Which of the following would cause the kidney to produce more concentrated urine?

A.
Increased blood volume
B.
Increased alcohol intake
C.
Decreased blood pressure
D.
Decreased ADH secretion

Solution:

QUESTION: 41

An oscillator circuit consists of an inductance of 0.5 mH and a capacitor of 20μF. The resonant frequency of the circuit is nearly

A.
15.92 Hz
B.
159.2 Hz
C.
1592 Hz
D.
15910 Hz

Solution:

QUESTION: 42

The penetrating power of X - rays increases with the

A.
Increase in its velocity
B.
Decreases in its velocity
C.
Decrease in its frequency
D.
Increase in its frequency

Solution:

QUESTION: 43

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

A.
The momentum of the proton is greater than that of the electron
B.
They have the same speed
C.
The kinetic energy of the proton is greater than that of the electron
D.
The kinetic energy of the proton is less than that of the electron

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 resistance of a cell does not depend upon

A.
current drawn from the cell
B.
temperature of the electrolyte
C.
concentration of electrolyte
D.
e.m.f. of the cell

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

For a metallic wire, the ratio V/i (V= the applied potential difference, i= current flowing) is

A.
Independent of temperature
B.
Increases as the temperature rises
C.
Decreases as the temperature rises
D.
Increases or decreases as temperature rises, depending upon the metal

Solution:

QUESTION: 48

The resistance of a wire is 10Ω. Its length is increased by 10% by stretching. The new resistance will now be

A.
12 Ω
B.
1.2 Ω
C.
13 Ω
D.
11 Ω

Solution:

QUESTION: 49

A moving coil galvanometer is converted into an ammeter reading upto 0.03 A by connecting a shunt of resistance 4r across it and into an ammeter reading upto 0.06 A when a shunt of resistance r is connected across it. What is the maximum current which can be sent through this galvanometer if no shunt is used

A.
0.01 A
B.
0.02 A
C.
0.03 A
D.
0.04 A

Solution:

QUESTION: 50

An electrical meter of internal resistance 20 Ω gives a full scale deflection when one milliampere current flows through it. The maximum current, that can be measured by using three resistors of resistance 12 Ω each, in milliamperes is

A.
10
B.
8
C.
6
D.
4

Solution:

QUESTION: 51

If an electron of mass m and charge e is accelerated from rest through a potential difference V in vacuum, then its final velocity will be

A.
eV/2m
B.
eV/m
C.
D.

Solution:

QUESTION: 52

If the rotational velocity of a dynamo armature is doubled, then induced emf will

A.
Become half
B.
Become double
C.
Become quadruple
D.
Remain unchanged

Solution:

QUESTION: 53

The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux φ linked with the primary coil is given by φ = φ ₀ + 4t, where φ is in weber, t is time in second and φ ₀ is a constant, the output voltage across the secondary coil is

A.
90 V
B.
120 V
C.
220 V
D.
30 V

Solution:

No. of turns across primary N_p = 50
Number of turns across secondary N_s = 1500
Magnetic flux linked with primary, Φ = Φ₀ + 4t
∴ Voltage across the primary,

QUESTION: 54

Two coils have self inductance L₁ = 4 m H and L₂ = 1 m H respectively. The currents in the two coils are increased at the same rate. At a certain instant of time both coils are given the same power. If i₁ and i₂ are the currents in the two coils, as that instant of time respectively, then the value of i₁/ i₂ is

A.
1/8
B.
1/4
C.
1/2
D.
1

Solution:

QUESTION: 55

Which of the following is/are not electromagnetic waves?

A.
β-rays
B.
X-rays
C.
cosmic rays
D.
both '1' and '3'

Solution:

QUESTION: 56

Two equal charges, q each are placed at a distance of 2a, and a third charge -2q is placed at the mid point. The potential energy of the system is

A.
q²/8 π ∈₀ a
B.
6q²/8 π ∈₀ a
C.
-7q²/8 π ∈₀ a
D.
9q²/8 π ∈₀ a

Solution:

QUESTION: 57

A charge q is placed at the corner of a cube of side l. The electric flux passing through the cube is

A.
q/∈₀
B.
q/6∈₀
C.
q/8∈₀
D.
q/32∈₀

Solution:

Eight cubes, each side l, are required to form a Gaussian surface
So that the charge q at the corner of a small cube appears at the centre of the bigger cube
According to Gauss's law, the electric flux through the bigger cubes = q/∈₀
Hence the electric flux through the given small cube = q/8∈₀

QUESTION: 58

Two equal charges q of opposite sign separated by a distance 2a constitute an electric dipole of dipole moment p. If P is a point at a distance r from the centre of the dipole and the line joining centre to this point makes an angle θ with the axis of the dipole, then potential at the point P is given by

A.
V = p cos θ/4 π ∈₀ r²
B.
V = p cos θ/4 π ∈₀ r
C.
V = p sn θ/4 π ∈₀ r
D.
V = p cos θ/4 π ∈₀ r²

Solution:

QUESTION: 59

The plates of a parallel plate capacitor are charged upto 200 volts. A dielectric slab of thickness 4 mm is inserted between its plates. Then to maintain the same potential difference between the plates capacitor, the distance between the plates is increased by 3.2 mm. The dielectric constant of dielectric slab is

A.
1
B.
4
C.
5
D.
6

Solution:

QUESTION: 60

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

A.
zero
B.
q/ε₀
C.
8q/ε₀
D.
16q/ε₀

Solution:

QUESTION: 61

Five equal capacitors connected in series have a resultant capacitance of 4 μ F. The total energy stored in these, when these are connected in parallel and charged to 400V is

A.
4J
B.
8J
C.
16J
D.
32J

Solution:

QUESTION: 62

A long solenoid carrying a current produces a magnetic field B along its axis. if the current is doubled and the number of turns per cm is halved, the new value of magnetic field is

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

Solution:

QUESTION: 63

Neutron was discovered by

A.
Madam curie
B.
Moseley
C.
Rutherford
D.
Chadwick

Solution:

QUESTION: 64

When the nucleus of a radioactive element emits an alpha particle, the atomic number is decreases by

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

Solution:

QUESTION: 65

The material used to slow down neutrons in a reactor is called

A.
Moderator
B.
Coolent
C.
Shield
D.
Micron

Solution:

QUESTION: 66

A photo cell is receiving light from a source placed at a distance of 1 m. If the same source is to be placed at a distance of 2m, then the ejected electron

A.
Moves with one-fourth energy as that of the initial energy
B.
Moves with one-fourth of momentum as that of the initial momentum
C.
will be half in number
D.
will be one-fourth in number

Solution:

QUESTION: 67

The work function of a metal is 2.8 eV. Its threshold wavelength will be

A.
4400 Å
B.
4433 Å
C.
5434 Å
D.
433 Å

Solution:

QUESTION: 68

A ray of light is incident on a plane mirror at an angle of 60^o . The angle of deviation produced by the mirror is

A.
120^o
B.
30^o
C.
60^o
D.
90^o

Solution:

QUESTION: 69

A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be

A.
10 cm
B.
15 cm
C.
20 cm
D.
30 cm

Solution:

m = -3, m = - v u
-3 = - v -20
⇒ v = - 60 cm
Now, u = - 20, v = - 60, f = ?

QUESTION: 70

A semiconductor device which is used for detecting light intensity is called a

A.
Photo cell
B.
Photo diode
C.
Zener diode
D.
Tunnel diode

Solution:

QUESTION: 71

A p-n photodiode is fabricated from a semiconductor with band gap of 2.8 eV. Which of the following wavelengths it can detect?

A.
950 nm
B.
820 nm
C.
580 nm
D.
440 nm

Solution:

QUESTION: 72

Which is true about the following? I An amplifier is necessarily an oscillator too II An oscillator is necessarily an amplifier too

A.
Only I is correct
B.
Only II is correct
C.
None of the two is correct
D.
Both are correct

Solution:

QUESTION: 73

A semiconductor device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops almost to zero. The device may be

A.
A P-type semiconductor
B.
A N-type semiconductor
C.
A P-N junction
D.
An intrinsic semiconductor

Solution:

QUESTION: 74

The reverse biasing in a p-n junction diode

A.
Decreases the potential barrier
B.
Increases the potential barrier
C.
Increases the number of minority charge carriers
D.
Increases the number of majority charge carriers

Solution:

QUESTION: 75

The dominant mechanism for motion of charge carriers in forward and reverse biased silicon p-n junction are

A.
drift in forward bias, diffusion in reverse bias
B.
diffusion in forward bias, drift in reverse bias
C.
diffusion in both forward and reverse bias
D.
drift in both forward and reverse bias

Solution:

QUESTION: 76

In a P-type semiconductor

A.
Current is mainly carried by holes
B.
Current is mainly carried by electrons
C.
The material is always positively charged
D.
Doping is done by pentavalent material

Solution:

QUESTION: 77

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: 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

Two identical light waves, propagating in the same direction, have a phase difference δ . After they superpose the intensity of the resulting wave will be proportional to

A.
cos δ
B.
cos δ/2
C.
cos²δ/2
D.
cos²δ

Solution:

QUESTION: 80

In Young's double slit experiment, the width of the fringes obtained with light of wavelength 6000 Angstrom is 2.0mm. The fringe width, if the entire apparatus is immersed in a liquid of refractive index 1.33, will be

A.
1.5m
B.
1.5cm
C.
1.5mm
D.
1.5km

Solution:

Fringe width in Young's double slit experiment β = Dλ/d
When apparatus is immersed in liquid, only wavelength of light (λ) changes
Wavelength of light is liquid,
λ' = λ/n , where n = refractive index of medium
Initial fringe width, β = Dλ/d .....(i)
Fringe width in liquid, β' = Dλ' /d .....(ii)
Dividing Equation (ii) by Equation (i), we get

QUESTION: 81

C₆H₅CHO + HCN → C₆H₅CH(CN)OH. The product would be

A.
Racemate
B.
Optically active
C.
A meso compound
D.
Mixture of diastereomers

Solution:

QUESTION: 82

The boiling point of glycerol is more than propanol because of

A.
Hybridisation
B.
H-bonding
C.
Resonance
D.
All of these factors

Solution:

QUESTION: 83

Which does not react with Fehling solution ?

A.
Acetaldehyde
B.
Propanone
C.
Glucose
D.
Formic acid

Solution:

Propanone is methyl ketone
So ketones do not react with fehling's solution

QUESTION: 84

Which of the following reagent react differently with HCHO and CH₃CHO and CH₃COCH₃

A.
HCN
B.
NH₂-NH₂
C.
NH₂OH
D.
NH₃

Solution:

QUESTION: 85

The reaction/method that does not give an alkane is

A.
Catalytic hydrogenation of alkenes
B.
Wurtz reaction
C.
kolbe's electrolytic method
D.
Dehydrohalogenation of an alkyl halide

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 units nanometer, fermi, angstrom and attometre arranged in decreasing order

A.
angstrom, nanometers, fermi, attometre
B.
fermi, attometre, angstrom, nanometre
C.
nanometre, angstrom, fermi, attometre
D.
attometre, angstrom, fermi, nanometre

Solution:

QUESTION: 88

The least count of an instrument is 0.01cm. Taking all precautions, the most possible error in the measurement can be

A.
0.005cm
B.
0.001cm
C.
0.01cm
D.
0.02cm

Solution:

QUESTION: 89

Carboxylic acids are more acidic than phenol and alcohol because of

A.
intermolecular hydrogen bonding
B.
formation of dimers
C.
highly acidic hydrogen
D.
resonance stabilization of their conjugate base

Solution:

QUESTION: 90

Which of the following is a disaccharide?

A.
Lactose
B.
Starch
C.
Cellulose
D.
Fructose

Solution:

QUESTION: 91

Calorific value is in order

A.
Fats > Carbohydrates > proteins
B.
Carbohydrates > fats > proteins
C.
Proteins > Carbohydrates > fats
D.
Fats > Proteins > Carbohydrates

Solution:

QUESTION: 92

The metal present in vitamin B₁₂ is

A.
Iron
B.
Manganese
C.
Cobalt
D.
Mercury

Solution:

QUESTION: 93

The acid amide is converted into acid with evolution of nitrogen gas by

A.
HCl
B.
NaOH
C.
HNO₂
D.
P₂O₅

Solution:

QUESTION: 94

Which of the following salt can be produced by the reaction of CO and caustic soda ?

A.
CH₃COONa
B.
Na₂C₂O₄
C.
HCOONa
D.
CH₃ONa

Solution:

QUESTION: 95

The rate, at which a substance reacts at constant temperature, depends upon its

A.
atomic mass
B.
active mass
C.
molecular mass
D.
equivalent mass

Solution:

QUESTION: 96

In a closed insulated container, a liquid is stirred with a paddle to increase its temperature. In this process, which of the following is true?

A.
∆E = ∆Q, ∆W = 0
B.
∆E ≠ 0, ∆Q ≠ 0, ∆W ≠ 0
C.
∆E = ∆W ≠ 0,∆Q = 0
D.
∆E = 0, ∆Q ≠ 0,∆W = 0

Solution:

QUESTION: 97

When H₂ and I₂ are mixed and equilibrium is attained, then

A.
amount of HI formed is equal to the amount of H₂ dissociated
B.
HI dissociation stops
C.
the reaction stops completely
D.
None of these

Solution:

QUESTION: 98

If a gas at constant temperature and pressure expands, then its

A.
internal energy increases
B.
internal energy decreases
C.
internal energy remains constant
D.
entropy increases and then decreases

Solution:

QUESTION: 99

Which of the following is not correct?

A.
Dissolution of NH₄Cl in excess of water is an endothermic process
B.
Neutralisation process is always exothermic
C.
The absolute value of enthalpy (H) can be determined experimentally
D.
The heat of reaction at constant volume is denoted by Δ E

Solution:

QUESTION: 100

A drug that is antipyretic as well as analgesic is

A.
Chloropromazine hydrochloride
B.
para-Acetamidophenol
C.
Chloroquin
D.
Penicillin

Solution:

QUESTION: 101

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

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

Solution:

QUESTION: 102

The number of possible isomers of an octahedral complex, [ Co(C₂O₄)₂(NH₃)₂ ] − is :

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

Solution:

QUESTION: 103

The organometallic compound which is used as a catalyst in the hydrogenation of alkenes or alkynes is

A.
Wilkinson's
B.
Ziegler-Natta
C.
Tollen's
D.
Kolbe

Solution:

QUESTION: 104

Hydrolysis of benzonitrile gives

A.
Benzylamine
B.
Aniline
C.
Benzoic acid
D.
Benzene

Solution:

QUESTION: 105

Hinsberg reagent is

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

Solution:

QUESTION: 106

The reagent used for the preparation of higher ethers from hologenated ethers is

A.
conc. H₂SO₄
B.
Sodium alkoxide
C.
Dry silver oxide
D.
Grignard reagent

Solution:

QUESTION: 107

During smelting an additional substance is added which combines with impurities to form a fusible product. It is known as

A.
Slag
B.
Gangue
C.
Mud
D.
Flux

Solution:

QUESTION: 108

Which of the following is not a reducing agent ?

A.
SO₂
B.
H₂O₂
C.
CO₂
D.
NO₂

Solution:

QUESTION: 109

Oxidation no. of chlorine in hypochlorous acid is

A.
+ 1
B.
+ 2
C.
- 1
D.
- 2

Solution:

QUESTION: 110

Consider the following four electrodes
A = Cu⁺² 0.0001 M | Cu (s)
B = Cu⁺² 0.1 M | Cu (s)
C = Cu⁺² 0.01 M |Cu (s)
D = Cu⁺² 0.001 M | Cu (s)
If the standard reduction potential of Cu⁺² ∕ Cu is + 0.34 V , the reduction potential (in volts) of the above electrodes follow the order

A.
A > D > C > B
B.
B > C > D > A
C.
C > D > B > A
D.
A > B > C > D

Solution:

QUESTION: 111

Sodium hexametaphosphate is known as

A.
Calgon
B.
Natalite
C.
Permutit
D.
Nitrolim

Solution:

QUESTION: 112

C and Si have

A.
Same physical properties
B.
Different physical properties
C.
Same physical but different chemical properties
D.
Different chemical and physical properties

Solution:

QUESTION: 113

0.24 g of a volatile gas upon vapourisation gives 45 ml vapour of N.T.P. what will be vapour density of the substance ? (Density of H₂ = 0.089 gl^-1)

A.
95.39
B.
5.993
C.
95.93
D.
59.93

Solution:

QUESTION: 114

Basicity of orthophosphoric acid is

A.
2
B.
4
C.
3
D.
5

Solution:

QUESTION: 115

To get n-type doped semiconductor, impurity to be added to silicon should have the following number of valence electrons

A.
1
B.
2
C.
3
D.
5

Solution:

QUESTION: 116

Which of the following has the same oxidation state as that of Cr in K₂CrO₃

A.
MgCrO₃
B.
Na₂CrO₃
C.
NH₄CrO₃
D.
Both A and B

Solution:

QUESTION: 117

Following eclipsed form of propane is repeated after rotation of:

A.
60⁰
B.
120⁰
C.
180⁰
D.
360⁰

Solution:

QUESTION: 118

Medicines are more effective, if they are used in

A.
solid state
B.
solution state
C.
colloidal state
D.
gaseous state

Solution:

QUESTION: 119

The white anhydrous copper sulphate decomposes to give

A.
CuSO₄.5H₂O
B.
CuSO₄.H₂O
C.
CuO + SO₃
D.
Cu

Solution:

QUESTION: 120

Which of the following is ionic in nature ?

A.
CuF₂
B.
CuCl₂
C.
CuBr₂
D.
none of the above

Solution:

QUESTION: 121

Fill in the blank with appropriate word.
No matter what.......come our way, we should not lose our temper.

A.
provocations
B.
distractions
C.
persons
D.
temptations

Solution:

QUESTION: 122

Find the Antonym of HINDRANCE

A.
Agreement
B.
Cooperation
C.
Persuasion
D.
Aid

Solution:

QUESTION: 123

Find the synonym of AMITY

A.
bondage
B.
contention
C.
friendship
D.
understanding

Solution:

QUESTION: 124

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

Feathering one's nest

A.
Taking adequate precaution against danger
B.
Enriching oneself at the expense of the public
C.
Buying insurance in time
D.
Making a new house

Solution:

QUESTION: 125

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

When the train finally CAME INTO the station the lonely traveller seemed relieved.

A.
pulled into
B.
will pull into
C.
pulled to
D.
have pulled into

Solution:

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A hundred year old tree of temperate area will show

Irregular number of rings which show increase or decrease along the length

More then 100 rings at the base and less than 100 near the top

100 rings at the base and progressive decrease towards the top

100 rings from base to top

Ten pairs of spiracles with trachea are present in

Star fish

Cockroach

Earthworm

Frog

Genophore/bacterial genome or nucleoid is made of

Histones and nonhistones

RNA and histones

A single double stranded DNA

A single stranded DNA

Cell wall

Mitochondria

Nucleolus

Nucleus

nucleus only

chromosomes only

cell organelles only

all above

Atria contract

Heart muscle is relaxed

Blood is pushed to the ventricle

Blood is pumped from the heart

Pectate

Carbonate

Phosphate

Sulphate

Tokyo (Japan)

Hyderabad (India)

New York (U.S.A.)

Manila (Philippines)

Teeth

Hind limbs

Scales

Nose

lotic

lentic

xeric

benthic

wings of bat

fins of fish

cervical fistula of man

flippers of whale

Equus

Eohippus

Pliohippus

Merychippus

Beadle and Tatum

Temin and Baltimore

Watson and Crick

Khorana

Transcription

Adopter for attaching amino acids over mRNA template

Transferring information to mRNA

Carry genetic code to cytoplasm

Azotobacter

Agrobacterium

yeast as a 2μ plasmid

roots of legumionus plants

Qualitative analysis of data

Observation of distinct inherited traits

His knowledge of biology

Consideration of one character at one time

Klinefelter's syndrome

Down's syndrome

Edward's syndrome

Patau's syndrome

epistatic factor

duplicate factor

complementary factor

supplementary factor

Incongruant muscle movement

Disordered muscle movement and mental deterioration

Weak eye sight and hearing power