In ruby laser, the stimulated emission is due to transition from
A
metastable state to any lower state
B
any higher state of lower state
C
metastable state to ground state
D
any higher state to ground state
Question 2Single Answer
A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is
A
uniform throughout the pipe not zero
B
zero only along the axis of the pipe
C
zero at any point inside the pipe
D
maximum at the centre and minimum at the edge
Question 3Single Answer
convex lens made of glass has focal length 0.15m in air. If the refractive index of glass is 3/2, and that of water is 4/3 the focal length of lens when immersed in water is
A
0.45 m
B
0.15 m
C
0.30 m
D
0.6 m
Question 4Single Answer
Two sources are said to be coherent if they produce waves
A
having a constant phase difference
B
of equal wavelength
C
of equal speed
D
having same shape of wavefront
Question 5Single Answer
Three resistors 1 Ω, 2 Ω, 3Ω resistor a 3 V battery is connected. The current through 3 Ω resistor is -
A
0.75 A
B
1 A
C
2 A
D
1.5 A
Question 6Single Answer
In a common emitter amplifier the input signal is applied across
A
anywhere
B
emitter-collector
C
collector-base
D
base-emitter
Question 7Single Answer
Adding detergents to water helps in removing dirty greasy stains. This is because
1. It increases greasy stains. This is because
2. It decreases the oil-water surface tension
3. It increases the viscosity of the solution
4. Dirt is held suspended surrounded by detergent molecules
A
2 and 4
B
1 only
C
3 and 4
D
4 only
Question 8Single Answer
Choose the correct statement (a) for a cricket ball that is spinning clockwise through air
S1 : Statemlines of air are symmetric around the ball.
S2 : The velocity of air above the ball relative to it is larger than that below the ball.
S3 : The velocity of air above the ball relative to it is smaller than that below the ball.
S4 : There is a net upward force on the ball.
A
S1,S2 and S4
B
S2 and S4
C
S4 only
D
S3 only
Question 9Single Answer
Ferromagnetic materials used in a transformer must have
A
low permeability and high hysterisis loss
B
high permeability and low hysterisis loss
C
high permeability and high hysterisis loss
D
low permeability and low hysterisis loss
Question 10Single Answer
According to Newton’s corpuscular theory, the speed of light is
A
same in all the medium
B
lesser in rarer medium
C
lesser in denser medium
D
independent of the medium
Question 11Single Answer
For the constructive interference the path difference between the two interfering waves must be equal to
A
(2𝜋 + 1)λ
B
2n𝜋
C
nλ
D
n
Question 12Single Answer
The accurate measurement of emf can be obtained using
A
multimeter
B
voltmeter
C
voltameter
D
potentiometer
Question 13Single Answer
A person, with outstretched arms, is spinning on a rotating stool. He suddenly brings his arms down to his sides. Which the following is true about his kinetic energy K and angular momentum L?
A
Both K and L increase
B
Both K and L remain unchanged
C
K remains constant, L increases
D
K increases but L remains constant
Question 14Single Answer
Which of the following is not a thermodynamic coordinate?
A
Gas constant (R)
B
Pressure (p)
C
Volume (V)
D
Temperature (T)
Question 15Single Answer
An antenna uses electromagnetic waves of frequency 5 MHz . For proper working, the size of the antenna should be
A
300 m
B
3 km
C
15 m
D
15 km
Question 16Single Answer
The amount of energy released when one microgram of matter is annihilated is
A
25 kWh
B
9 x 1010 kWh
C
3 x 1010 kWh
D
0.5 x 105 kWh
Question 17Single Answer
The number of significant figures in the numbers 4.8000 x 104 48000.50 are respectively
A
5 and 6
B
5 and 7
C
2 and 7
D
2 and 6
Question 18Single Answer
β-decay means emission of electron from
A
innermost electron orbit
B
a stable nucleus
C
outermost electron orbit
D
radioactive nucleus
Question 19Single Answer
An electric heater rated 220 V and 550 W is connected to AC mains. The current drawn by it is
A
0.8 A
B
2.5 A
C
0.4 A
D
1.25 A
Question 20Single Answer
A string is wound round the rim of a mounted flywheel of mass 20 kg and radius 20 cm. A steady pull of 25 N is applied on the cord. Neglecting friction and mass of the string, the angular acceleration of the wheel is
A
50 s-2
B
25 s-2
C
12.5 s-2
D
6.25 s-2
Question 21Single Answer
A billiards player hits a stationary ball by an identical ball to pocker the target ball in a corner pocket that is at an angle of 35o with respect to the direction of motion of the first ball. Assuming the collision as elastic and that frictional and rotational motions are not important, the angle made by the target ball with respect to the imcoming ball is
A
35o
B
50o
C
55o
D
60o
Question 22Single Answer
A body of mass 0.05 kg is observed to fall with an acceleration of 9.5 ms-2. The opposing force of air on the body is (g = 9.8 ms-2)
A
0.015 N
B
0.15 N
C
0.030 N
D
zero
Question 23Single Answer
The colloidal solution in which both the dispersed phase and dispersion medium are liquids are called
A
emulsions
B
gels
C
foams
D
liquid crystals
Question 24Single Answer
In fog, photographs of the objects taken with infrared radiations are more clear than those obtained during visible light because
A
I-R radiation has lesser wavelength than visible radiation
B
scattering of I-R light is more the object is less
C
the intensity of I-R light is more the object is less
D
scattering of I–R light is less than visible light
Question 25Single Answer
Three concurrent co-planar forces 1 N, 2 N and 3 N acting along different directions on a body
A
can keep the body in equilibrium if 1 N and 3 N act at right angle
B
can keep the body in equilibrium if 1 N and 2 N act at right angle
C
cannot keep the body in equilibrium
D
can keep the body in equilibrium in 1 N and 3 N act at an acute angle
Question 26Single Answer
Sound waves transfer
A
only energy not momentum
B
energy
C
momentum
D
both (a) and (b)
Question 27Single Answer
G P Thomson experimentally confirmed the existence of matter waves by the phenomena
A
diffraction
B
refraction
C
polarisation
D
scattering
Question 28Single Answer
The resistance of a wire at 300 K is found to be 0.3 Ω. If the temperature coefficient of resistance of wire is 1.5 x 10-3 K-1, the temperature at which the resistance becomes 0.6 Ω is
A
720 K
B
345 K
C
993 K
D
690 K
Question 29Single Answer
Two luminous points sources separated by a certain distance are at 10 km from an observer. If the aperture of his eye is 2.5 x 10-3 m and the wavelength of light used is 500 nm the distance of separation between the point sources just seen to be resolved is
A
12.2 m
B
24.2 m
C
2.44 m
D
1.22 m
Question 30Single Answer
A door 1.6 m wide requires a force of N to be applied at the free end to open or close it. The force that is required at a point 0.4 m distance from the hinges for opening or closing the door is
A
1.2 N
B
3.6 N
C
2.4 N
D
4 N
Question 31Single Answer
0.1 m3 of water at 80o C. The final temperature of the mixture is
A
65oC
B
70oC
C
60oC
D
75oC
Question 32Single Answer
The spectral series of the hydrogen atom that lies in the visible region of the electromagnetic spectrum
A
Paschen
B
Balmer
C
Lyman
D
Brackett
Question 33Single Answer
A resistor and a capacitor are connected inseries with an AC source. If the potential drop across the capacitor is 5 V and that across resistor is 12 V, then applied voltage is
A
13 V
B
17 V
C
5 V
D
12 V
Question 34Single Answer
The amount of heat energy radiated by a metal at temperature T is E. When the temperature is increased to 3T, energy radiated is
A
8 1E
B
9 E
C
3 E
D
27 E
Question 35Single Answer
A man, of mass 60 kg, is riding in a lift. The weights of the man, when the lift is accelerating upwards and down wards at 2m/s2 are respectively (Taking g=2m/s2)
A
720 N and 480 N
B
480 N and 720 N
C
600 N and 800 N
D
None of these
Question 36Single Answer
A galvanometer of resistance 240 Ω allows only 4% of the main current after connecting a shunt resistance. The value of the shunt resistance is
A
10 Ω
B
20 Ω
C
8 Ω
D
5 Ω
Question 37Single Answer
The phenomena in which proton flips is
A
nuclear magnetic resonance
B
lasers
C
radioactivity
D
nuclear fusion
Question 38Single Answer
According to the quark model, it is possible to build all the hadrons using
A
2 quarks and 3 antiquarks
B
1 quarks and 2 antiquarks
C
3 quarks and 3 antiquarks
D
2 quarks and 2 antiquarks
Question 39Single Answer
The surface temperature of the stars is determined using
A
Planck’s law
B
Wien’s displacement law
C
Rayleigh-Jeans law
D
Kirchhoff’s law
Question 40Single Answer
A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away from the lens on the other side of the principal axis, the intensity of light
A
first decreases and then increases
B
continuously increases
C
continuously decreases
D
first increases and then decreases
Question 41Single Answer
Continuous emission spectrum is produced by
A
incandescent electric lamp
B
mercury vapour lamp
C
sodium vapour lamp
D
polyatomic substances
Question 42Single Answer
A ray of light is incident on a plane mirror at an angle of 600. The angle of deviation produced by the mirror is
A
1200
B
300
C
600
D
900
Question 43Single Answer
The electric potential at any point x,y,z in metres is given by V = 3x2. The electric field at point (2,0,1) is
A
12 Vm-1
B
-6 Vm-1
C
6 Vm-1
D
-12 Vm-1
Question 44Single Answer
Young’s double. Slit experiment gives interference fringes of width 0.3 mm. A thin glass plate made of material of refractive index 1.5 is kept in the path of light from one of the slits, then the fringe width becomes
A
zero
B
0.3 mm
C
0.45 mm
D
0.15 mm
Question 45Single Answer
The magnetic dipole moment of a current loop is independent of
A
magnetic field in which it is lying
B
number of turns
C
area of the loop
D
current in the loop
Question 46Single Answer
2 g of a radioactive sample having half-life of 15 days was synthesised on 1st Jan 2009. The amount (including both the days) is
A
0 g
B
0.125 g
C
1 g
D
0.5 g
Question 47Single Answer
The ratios of the distance traversed, in successive intervals of time by a body, falling from rest, are
A
1 : 3 : 5 : 7 : 9 …………
B
2 : 4 : 6 : 8 : 10 ……………….
C
1 : 4 : 7 :10 : 13 …………
D
None of the above
Question 48Single Answer
A source having frequency of 240 Hz is moving towards on observer with a speed of 20 m/s. when the observer is moving towards the source with a velocity of 20m/s. then apparent frequency heard by the observer, if velocity of sound is 330m/s, will be:
A
268 Hz
B
271 Hz
C
368 Hz
D
250 Hz
Question 49Single Answer
Choose the incorrect statement out of the following.
A
Every measurement by any measuring
B
Every calculated physical quantity that is based on measured values has some error
C
A measurement can have more accuracy but less precision and vice-versa
D
The percentage error is different from relative error
Question 50Single Answer
If E,M,L and G denote energy, mass, angular momentum and gravitational constant respectively then the quantity ( E2L2/M5G2) has the dimensions of
A
angle
B
length
C
mass
D
None of these
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Biology
Question 51Single Answer
The respiratory quotient during cellular respiration would depend on
A
the nature of enzymes involved
B
the nature of the substrate
C
the amount of carbon dioxide released
D
the amount of oxygen utilised
Question 52Single Answer
Which of the following is not a green - house gas ?
A
Water vapour
B
Carbon monoxide
C
Methane
D
Oxygen
Question 53Single Answer
Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is
A
50%
B
75%
C
0%
D
25%
Question 54Single Answer
An animal, which has both exoskeleton and endoskeleton structures is a
A
fresh-water mussel
B
tortoise
C
frog
D
jelly fish
Question 55Single Answer
Identify the group, which includes animals all of which give birth to young ones directly?
A
Dolphin, kangaroo, bat, cat
B
Platypus, penguin, bat, hippopotamus
C
shrew, bat, kiwi, car
D
Lion, whale, ostrich, bat
Question 56Single Answer
Compare the statement A and B. Statement A Blood sugar level falls rapidly after hepatectomy. Statement B The glycogen of the liver is the principal source of blood sugar.
Select the correct description.
A
Both the statements A and B are correct and B is the reason for A
B
Statement A is correct and B is wrong
C
Statement A is wrong and B is correct
D
Both the statements A and B are correct and B is not the reason for A
Question 57Single Answer
What is/are true about heart wood?
(A) It does not help in water conduction.
(B) It is also called laburnum.
(C) It is dark in colour but very soft.
(D) It has tracheary elements which are filled with tannin, resin, etc.
A
B,C and D
B
A and D
C
B and D
D
A, B and C
Question 58Single Answer
Compare the statements A and B. Statement A Auxins promote apical dominance by suppressing the activity of lateral buds. Statement B In moriculature, periodic pruning of shoot tips is done to make mulberry plants bushy.
Select the correct description.
A
Both the statements A and B are correct and A is the reason for B
B
Statement A is correct and B is wrong
C
Statement A is wrong and B is correct
D
Both the statements A and B are correct and A is not the reason for B
Question 59Single Answer
Bryophytes resemble algae is the following aspects
A
Filamentous body, presence of vascular tissues and autotrophic nutrition
B
Differentiation of plant body into root, stem and leaves and autotrophic nutrition
C
Thallus like plant body, presence of roots and autotrophic nutrition
D
Thallus like plant body, lack of vascular tissues and autotrophic nutrition
Question 60Single Answer
Stoma opens, when
A
guard cells swell due to an increase in their water potential
B
guard cells swell by endosmosis duie to influx of hydrogen ions (protons)
C
guard cells swell by endosmosis due to efflux of potassium ions
D
guard cell swell due to a decrease in their water potential
Question 61Single Answer
Which of the following is properly matched ?
A
Platyhelminthes –Trematoda – Planoria
B
Echinodermate – Asteroidea – Star fish
C
arthropoda – Insecta – Spider
D
Mollusca – Cephalopoda – Unio
Question 62Single Answer
A man is admitted to a hospital. He is suffering from an abnormally low body temperature, loss of appetite and extreme thirst. His brain scan would probably show a tumour in
A
medulla oblongata
B
pons
C
cerebellum
D
hypothalamus
Question 63Single Answer
The agents, which are known to cause CJD are
A
protein particles
B
a class of bacteria
C
a class of viruses
D
fungi
Question 64Single Answer
In crop improvement programmers, virus-free clones can be obtained through
A
grafting
B
hybridization
C
embryo culture
D
shoot apex culture
Question 65Single Answer
A person is suffering from frequent episodes of nasal discharge, nasal congestion, reddening of eyes and watery eyes. These are the symptoms of
A
cyanosis
B
bronchitis
C
rhinitis
D
bronchial carcinoma
Question 66Single Answer
Some important events in the human female reproductive cycle are given below. Arrange the events in a proper sequence.
A: Secretion of FSH
B: Growth of corpus luteum
C: Growth of the follicle and oogenesis
D: Ovulation
E: Sudden increase in the levels of LH
A
C → A → D → B → E
B
A → C → E → D → B
C
A → D → C → E → B
D
B → A → C → D → E
Question 67Single Answer
Which of the following options shows bisexual animals only ?
A
Amoeba, sponge, leech
B
Sponge, cockroach, Amoeba
C
Earthworm, sponge, leech
D
Tapeworm, earthworm, honeybee
Question 68Single Answer
Vaccination against small pox was developed by:
A
Louis Pasteur
B
Edward jenner
C
Robert Koch
D
Alexander Flemming
Question 69Single Answer
The value of human diastolic blood pressure is :
A
120 – 80 = 40 mm. Hg
B
120 mm. Hg
C
80 mm. Hg
D
128/80 mm. Hg
Question 70Single Answer
Balance theory of sex determination holds good for:
A
Allium cepa
B
Drosophila
C
Humans
D
grasshoppers
Question 71Single Answer
the plants respond to photo – periods due to the presence of :
A
Phytochromes
B
Stomata
C
Enzymes
D
Phytohormones
Question 72Single Answer
Identify the edible fresh-water telesots:
A
Sharks
B
Rays and skates
C
Hilsa ilisha
D
Catla catla
Question 73Single Answer
Plasmids occur in:
A
Viruses
B
Chromosomes
C
Bacteria
D
Chloroplasts
Question 74Single Answer
Match the names of antibiotics listed under column 1 with their source given under column 2; choose the correct combination of alphabets of the two columns:
The bond formed between the first phosphate group and adenosine in ATP is:
A
Nitro – phosphate bond
B
Adeno – phosphate bond
C
Phosphoester bond
D
Phosphoanhydride bond
Question 76Single Answer
The protists have:
A
Gene containing nucleo-proteins condensed together in loose mass
B
Nucleo-protein in direct contact with the nest of the cell substance
C
Only tree nucleic acid aggregates
D
Membrane bound nucleo-proteins lying embedded in the cytoplasm
Question 77Single Answer
Antrum is the cavity of:
A
Gastrula
B
Graffian follicle
C
Ovary
D
Blastula
Question 78Single Answer
Which of the following statement is wrong?
A
Endospores are produced in pteridophyta
B
Naked seeds are seen in gymnosperms
C
Capsule is present in the sporophyte of bryophyte
D
Basidiocarp is the fruiting body of fungus
Question 79Single Answer
The pioneers in the field of organic evolution are:
A
Darwin, Hugo de Vries, Lamarck, Huxely
B
Karl Landsteiner, Hugo de Vries, Malthus, Darwin
C
Lamarck, Karl Landsteiner, Malthus, De Vries
D
Darwin, Lamarck, Karl Landsteiner, De Vries
Question 80Single Answer
This one is the characteristic of epithelial tissues:
A
These cells never produce glands
B
The cells have a rapid rate of cell division
C
Tissues are highly vascularized
D
Large intercellular spaces are seen between the cells
Question 81Single Answer
Great Indian Bustard sanctuary is located in:
A
Rajasthan
B
Maharashtra
C
Pakistan
D
Madhya Pradesh
Question 82Single Answer
The result of ozone hole is:
A
Acid rain
B
Global warming
C
The UV radiations reach the earth
D
Greenhouse effect
Question 83Single Answer
This is not cells of areolar tissue:
A
Macrophages
B
Schwann cell
C
Plasma cell
D
Adipose cell
Question 84Single Answer
The pH of stomach range between:
A
7.1 – 8.2
B
7.6 – 8.6
C
1.5 – 2.0
D
6.8 – 7.2
Question 85Single Answer
Match the name of the experiments listed under column 1 with the aim of the experiment given under column 2; choose the answer which give the correct combination of the alphabets:
column 1
column 2
A.
Gridling experiment
p
Ascent of sap
B.
Cobalt chloride paper method
q
Transpiration
C.
Crescograph
r
Unequel transpiration on leaf surfaces
D.
Bell jar experiment
s
translocation
A
A = s, B = r, C = p, D = q
B
A = r, B = p, C = s, D = q
C
A = q, B = p, C = s, D = r
D
A = s, B = p, C = q, D = r
Question 86Single Answer
Number of endangered species of angiosperms in India is:
A
15,000
B
500
C
3,000
D
None of these
Question 87Single Answer
Transduction in bacteria is mediated by:
A
Cosmids
B
F - factors
C
Plasmid vectors
D
Phage vectors
Question 88Single Answer
Match the common name of diseases listed under column 1 unit their medical terms listed under column 2; choose the answer which gives the correct combination of the alphabets of the two columns:
Column 1
Column 2
A.
Blood clotting in small capillaries
p
Rhinitis
B.
Value defects
q
Stenosis
C.
Hay fever
r
Parkinson's disease
D.
Paralysis
s
Coronany thrombosis
A
A = s, B = q, C = p, D = r
B
A = r, B = s, C = q, D = p
C
A = q, B = s, C = r, D = p
D
A =s, B = p, C = r, D = q
Question 89Single Answer
The cell wall of bacteria is composed of:
A
Murein
B
Chitin
C
Cellulose
D
Suberin
Question 90Single Answer
The phenomenon, in which an allele of one gene suppresses the activity of an allele of another gene, is known as:
A
Suppression
B
Inactivation
C
Epistasis
D
Dominance
Question 91Single Answer
Which of the following is the aim of Mohl’s half-leaf experiment?
A
To show the carbon dioxide is produced during anaerobic reactions
B
To show that carbon dioxide is produced during aerobic reactions
C
To show the importance of carbon dioxide for photosynthesis
D
To show chlorophy II is necessary for photosynthesis
Question 92Single Answer
Which of the following is shift in chloride shift
A
O2 and CO2
B
Bicarbonate ions
C
CO2
D
O2
Question 93Single Answer
Match the locomotory organs given under column 1 with the phylum in which they are seen, listed under column 2; choose the answer which gives the correct combination of the alphabets of the two columns:
Column 1
Column 1
A
Pseudopodia
p
Mollusca
B.
Parapodia
q
Chondriehthyes (Pisces)
C.
Muscular foot
r
Protozoa
D.
fins
s
annelida
A
A = r, B = p, C = s, D = q
B
A = p, B = r, C = s, D = q
C
A =s, B = r, C = q, D = p
D
A =r, B = s, C = p, D = q
Question 94Single Answer
The larve of bombyx mori is:
A
Cocon
B
Nymph
C
Caterpillar
D
Trochophor
Question 95Single Answer
The first stable intermediate product of photosynthesis in C4 plant is:
A
Phospho glyseric acid
B
Ribulose 1, 5 – biphosphate
C
PGAL
D
Oxaloacetate
Question 96Single Answer
The lytic enzymes released by sperm is:
A
Acrosome
B
Ligase
C
Androgamone
D
Hyaluronidase
Question 97Single Answer
An example for the enucleated living plant cell is
A
Xylem parenchyma
B
RBCs
C
Sieve tubes of phloem
D
Companion cells of phloem
Question 98Single Answer
The example for polypetalous, zygomorphic corlla is:
A
Ocimum
B
Crotalaria
C
Rose
D
Mustard
Question 99Single Answer
Identify the correct sequence of taxa in Linnaen hierarchy:
A
Species, genus, family, order, class
B
Class, genus, species, genus, order
C
Species, genus, phylum, family, class
D
Phylum, class, family, species, order
Question 100Single Answer
Match the biological molecules listed under column 1 with their biological functions listed under column 2; choose the choice which gives correct combination of alphabets of the two columns:
Column 1
Column 2
A.
Glycogen
p
hormone
B.
Globulin
q
biocatalyst
C.
Steroids
r
antibody
D.
thrombin
s
storage product
A
A = r, B = q, C = s, D = p
B
A = s, B = q, C = p, D = r
C
A = q, B = s, C = r, D = p
D
A =s, B = r, C = p, D = q
Question 101Single Answer
This one is a viral disease in silk worm:
A
Flacherie
B
Grasserie
C
Muscardine
D
Pebrine
Question 102Single Answer
Diagnosis of tuberculosis is done by
A
Emulator and antiformin method
B
Concentration method
C
Petroff’s method
D
All of the above
Question 103Single Answer
This is an insectivorous plant:
A
Opuntia
B
Eichhornia
C
Utricularia
D
Crotalaria
Question 104Single Answer
Corpus callosum is seen in:
A
The pituitary
B
The ovary
C
The brain
D
The corpus luteum
Question 105Single Answer
Anemophily means
A
Pollination by birds
B
Pollination by wind
C
Animal loving plants
D
Pollination by animals
Question 106Single Answer
The order insectivore comes under:
A
Class mammalia
B
Class insecta
C
Phylum Echinodermata
D
Phylum arthropoda
Question 107Single Answer
An example of obligate anaerobe is:
A
Aspergillus sp.
B
Clostridium
C
Penicillium notatum
D
HIV
Question 108Single Answer
Transfer of genes from one gene pool to another is called:
A
Speciation
B
Genetic drift
C
Gene flow
D
Mutation
Question 109Single Answer
Match the name of glands listed under column 1 with the location given under column 2; choose the answer which gives the correct combination of the alphabets of the two column:
Column 1
Column 2
A.
Crypts of liberkuhn
p
Loop of duodenum
B.
Pancreas
q
Stomach
C.
Adrenal glands
r
Intestine
D.
Gastric glands
s
Kidney
A
A = r, B = p, C = q, D = s
B
A = r, B = p, C = s, D = q
C
A = q, B = s, C = r, D = p
D
A = p, B = r, C = s, D = q
Question 110Single Answer
This is a method of birth control:
A
IUDs
B
GIFT
C
HTF
D
IVE – ET
Question 111Single Answer
Swan necked flask experiment was done by:
A
Aristotle
B
Francisco redi
C
Louis pasteur
D
Robert Koch
Question 112Single Answer
The chemical nature of hormones secreted by a and d cells of pancreas is
A
Glycolipid
B
Glycoprotein
C
Steroid
D
Polypeptide
Question 113Single Answer
This is not an electron transferring molecule:
A
Co – enzyme
B
Fe – s protein
C
ATP
D
NAD+
Question 114Single Answer
A sudden from anaerobic to aerobic process is called:
A
Blackman’s law
B
Emerson’s effect
C
Chargaff rule
D
Pasteur effect
Question 115Single Answer
This is an inverted pyramid:
A
Pyramid of energy in a pond ecosystem
B
Pyramid of numbers in a grassland ecosystem
C
Pyramid of biomass in a pond ecosystem
D
Pyramid of biomass in a grassland ecosystem
Question 116Single Answer
Duramen is:
A
Periderm
B
Bark
C
Sapwood
D
Heart wood
Question 117Single Answer
MOET is a method of:
A
Fish cultivation
B
Birth control in humans
C
Cloning in sheep
D
Hybridization in cattles
Question 118Single Answer
The spark discharge apparatus to test chemical evolution of life was designed by:
A
Oparin and Haldane
B
Urey and Miller
C
Jacob and monad
D
Dixon and Jolly
Question 119Single Answer
Which one of the following is not a component of lac operon model?
10-6 M NaOH is diluted 100 times. The pH of the diluted base is
A
between 7 and 8
B
between 5 and 6
C
between 6 and 7
D
between 10 and 11
Question 127Single Answer
In the electrolysis of acidulated water, it is desired to obtain 1.12 cc of hydrogen per second under STP condition. The current to be passed is
A
1.93 A
B
9.65 A
C
19.3 A
D
0.965 A
Question 128Single Answer
The one which decreases with dilution is
A
molar conductance
B
conductance
C
specific conductance
D
equivalent conductance
Question 129Single Answer
Vapour pressure of pure ‘A’ is 70 mm of Hg at 25oC. It forms an ideal solution with ‘B’ in which mole fraction of A is 0.8. if the vapour pressure of the solution is 84 mm of Hg at 25oC, the vapour pressure of pure ‘B’ at 25oC is
A
28 mm
B
56 mm
C
70 mm
D
140 mm
Question 130Single Answer
A 6% solution of urea is isotonic with
A
1 M solution of glucose
B
0.05 M solution of glucose
C
6% solution of glucose
D
25% solution of glucose
Question 131Single Answer
In countries nearer to polar region, the roads are sprinkled with CaCl2. This is
A
to minimise the wear and tear of the roads
B
to minimise the snow fall
C
to minimise pollution
D
to minimise the accumulation of dust on the road
Question 132Single Answer
A compound of ‘A’ and ‘B’ crystallises in a cubic lattice in which ‘A’ atoms occupy the lattice points at the corners of the cube. The ‘B’ atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is
A
AB2
B
A2B
C
AB
D
AB3
Question 133Single Answer
In electrophilic aromatic substitution reaction, the nitro group is meta directing because it
A
decreases electron density at ortho and para positions
B
decreases electron density at meta position
C
increases electron density at meta position
D
increases electron density at ortho and para position
Question 134Single Answer
The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with
A
PCI5
B
PCI3
C
SOCl2 in presence of pyridine
D
dry HCl in the presence of anhydrous ZnCl2
Question 135Single Answer
The carbon bond length in benzene is
A
in between C2H6 and C2H4
B
same as in C2H4
C
in between C2H6 and C2H2
D
in between C2H4 and C2H2
Question 136Single Answer
The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is
A
methanal
B
propanal
C
propanone
D
ethanal
Question 137Single Answer
An organic compound x is oxidised by using acidified K2Cr2O7. The product obtained reacts with phenyl hydrazine but does not answer silver mirror test. The possible structured of X is
A
CH3CH2OH
B
CH3 – C – CH3
C
(CH3)2CHOH
D
CH3CHO
Question 138Single Answer
Arrange the following in the increasing of their. Basic strengths CH3NH2, (CH3)2NH, (CH3)2N, NH3
A
NH3, < (CH3)3N < (CH3)2NH < CH3NH2
B
NH3 < (CH3)3N < CH3NH2 < (CH3)2NH
C
(CH3)3N < NH3 < CH3NH2 < (CH3)2NH
D
CH3NH2 < (CH3)2NH < (CH3)3N , NH3
Question 139Single Answer
The one which has least iodine value is
A
sunflower oil
B
ginger oil
C
ghee
D
groundnut oil
Question 140Single Answer
A diabetic person carries a packet of glucose with him always, because
A
glucose reduces the blood sugar level slowly
B
glucose increases the blood sugar level slowly
C
glucose reduces the blood sugar level
D
glucose increases the blood sugar level almost instantaneously
Question 141Single Answer
There are 20 naturally occurring among acids. The maximum number of tripeptides than can be obtained is
A
8000
B
6470
C
7465
D
5360
Question 142Single Answer
At what temperature ill the RMS velocity of SO2 be the same as that of O2 at 303 K ?
A
403 K
B
303 K
C
606 K
D
273 K
Question 143Single Answer
Phenol is treated with bromine water and shaken well. The white precipitate formed during the process is
A
m–bromophenol
B
2, 4, 6 tribromophenol
C
2-4 dibromophenol
D
A mixture of o-and p-bromophenols
Question 144Single Answer
In thermite process the metal used as reducing agent is:
A
Nickel
B
Zinc
C
Sodium
D
Aluminium
Question 145Single Answer
Which of the following compounds on boiling with alkaline KMnO4 and subsequent acidification will not give benzoic acid?
A
Benzyl alcohol
B
Acetophenone
C
Anisole
D
Toluene
Question 146Single Answer
The base present in DNA, but not in RNA is:
A
Guanine
B
Adenine
C
Uracil
D
Thymine
Question 147Single Answer
The total number of lattice arrangements in different crystal system is:
A
7
B
3
C
8
D
14
Question 148Single Answer
Alcoholic potash is used to bring about :
A
Dehydrogenation
B
Dehydration
C
Dehydrohalogenation
D
Dehalogenation
Question 149Single Answer
Which of the following is the correct statement?
A
Order of a reaction has always an integral value
B
Mechanism of a reaction proposed is always final
C
Zero order reactions are multi-step reactions
D
Order of reaction can be predicted even without knowing the rate law
Question 150Single Answer
The unit of quantity of electricity is:
A
Ohm
B
Ampere
C
Coulomb
D
Volt
Question 151Single Answer
Which of the following organic compounds answers both iodoform test and fehling’s test ?
A
Methanal
B
Ethanol
C
Propane
D
Ethanal
Question 152Single Answer
10 dm3 of N2 gas and 10 dm3 of gas X at the same temperature and pressure contain the same number of molecules.
A
NO
B
H2
C
CO2 or CO
D
All of these
Question 153Single Answer
When the electrons of hydrogen atoms return to L shell from shells of higher energy, we get a series of lines in the spectrum. This series is called
A
Balmer series
B
Lyman series
C
Bracket series
D
Paschen series
Question 154Single Answer
The alcohol obtained by the hydrolysis of oils and fats is:
A
Glycol
B
Glycerol
C
Propanol
D
Pentanol
Question 155Single Answer
Which of the following alloys is used for making magnets for hearing aids?
A
Alnico
B
German silver
C
Invar
D
Monel metal
Question 156Single Answer
One dm3 of 2M ethanoic acid is mixed with one dm3 of 3M ethanol to form an easter
CH3COOH + C2H5OH → CH3COOC2H5 +H2O
The decrease in the initial rate if each solution is diluted with an equal volume of water would be
A
2 times
B
4 times
C
0.25 times
D
0.5 times
Question 157Single Answer
Which one of the following can be classified as a Bronstead base?
A
NO3-
B
H3O+
C
CH3COOH
D
NH4+
Question 158Single Answer
Gold sol is an electronegative sol. The amount of electrolyte required to coagulate a certain amount of gold sol is minimum in the case of :
A
CaCl2
B
NaCl
C
AlCl3
D
Na2SO4
Question 159Single Answer
Aluminium displaces hydrogen from acids, but copper does not. A Galvanic cell prepared by combining Cu/Cu2+ and Al/Al3+ has an emf of 2.0 V at 298 K. If the potential of copper electrode is +0.34 V, that of aluminium electrode is:
A
– 2.3 V
B
+ 2.34 V
C
– 1.66 V
D
+ 1.66 V
Question 160Single Answer
1.5 moles of O2 combine with Mg to form the oxide MgO. The mass of Mg that has combined is (Mg = 24):
A
72 g
B
36 g
C
48 g
D
24 g
Question 161Single Answer
How much of NaOH is required to neutralize 1500 cm3 of 0.1 N HCI?(Na = 23):
A
60 g
B
6 g
C
4 g
D
40 g
Question 162Single Answer
The boiling point of water is exceptionally high because:
A
Water molecule is not linear
B
Water molecule is linear
C
There is covalent bond between H and O
D
Water molecules associate due to hydrogen bonding
Question 163Single Answer
P4O10 is not used with to dry NH3 gas because:
A
P4O10 is basic and NH3 is acidic
B
P4O10 is acidic and NH3 is basic
C
P4O10 is not a drying agent
D
P4O10 reacts with moisture in NH3
Question 164Single Answer
A radioactive isotope has a half-life of 10 years. What percentage of the original amount of it remain after 20 years:
A
1
B
12.5
C
8
D
25
Question 165Single Answer
75% of a first order reaction is completed in 30 minutes. What is the time required for 93.75% of the reaction (in minutes)?
A
45
B
120
C
90
D
60
Question 166Single Answer
Excess of Na+ ions in our system causes:
A
High B.P.
B
Low B.P.
C
Diabetes
D
Anaemia
Question 167Single Answer
Which of the following is the most active chemically?
A
Chlorine
B
Flourine
C
Lithium
D
Iodine
Question 168Single Answer
Which among the following is a Noble Gas?
A
Nitrogen
B
Hydrogen
C
Oxygen
D
Helium
Question 169Single Answer
Which among the following is known as White Vitriol?
A
Zinc Sulphate
B
Zinc Chloride
C
Zinc Phosphate
D
Zinc oxide
Question 170Single Answer
The oxidation number and the electronic configuration of sulphur in H2SO4 is:
A
+ 4; 1s2 2s2 2p6 3s2
B
+2; +6; 1s2 2s2 2p6 3s2 3p2
C
+3; 1s2 2s2 2p6 3s2 3p1
D
+6; 1s2 2s2 2p6
Question 171Single Answer
The mass of 112 cm3 of CH4 gas at STP is:
A
0.16 g
B
0.8 g
C
0.08 g
D
1.6 g
Question 172Single Answer
The volume of water to be added to 100 cm3 of 0.5 N H2SO4 to get decinormal concentration is:
A
400 cm3
B
500 cm3
C
450 cm3
D
100 cm3
Question 173Single Answer
Reactions that have standard free energy changes less than zero always have equilibrium constant equal to
A
unity
B
greater than unity
C
less than unity
D
zero
Question 174Single Answer
In order to decompose 9g water 142.5 kJ heat is required. Hence the enthalpy of formation of water is:
A
– 142.5 kJ
B
+ 142.5 kJ
C
– 285 kJ
D
+ 285 kJ
Question 175Single Answer
A quantity of PCl5 was heated in a 10 dm3 vessel at 2500 C PCl5 (g) PCl3 (g) + Cl2 (g) At equilibrium the vessel contains 0.1 mole of PCl5 and 0.2 mole of Cl2. The equilibrium constant of the reaction is:
A
0.05
B
0.02
C
0.025
D
0.04
Question 176Single Answer
Which among the following species has the highest ionization potential?
A
B
B
Li
C
Ne
D
F
Question 177Single Answer
Which one of the following metallic hydroxides does not dissolve in sodium hydroxide solution?
A
Zn(OH)2
B
Al(OH)3
C
Fe(OH)3
D
Pb(OH)2
Question 178Single Answer
IUPAC name of K3Fe(CN)6 is:
A
Potassium ferricyanide
B
Hexacyano ferrate (III)
C
Potassium hexacyno ferrate (III)
D
Potassium hexacyno ferrate (II)
Question 179Single Answer
Unpleasant smell of carbylamines is obtained when chloroform and alcoholic KOH are heated with:
A
Any aliphatic amine
B
Any amine
C
Any primary amine
D
Any aromatic amine
Question 180Single Answer
Which of the following is an aldohexose?
A
Cellulose
B
Sucrose
C
Glucose
D
Raffinose
Question 181Single Answer
When a mixture of calcium acetate and calcium formate is dry distilled, the product formed as:
A
Ethanal
B
Butanone
C
Methanal
D
Acetophenone
Question 182Single Answer
The test used for identifying peptide linkage in proteins is:
A
Borsche’s test
B
Molisch’s test
C
Ninhydrin test
D
Biuret test
Question 183Single Answer
Which of the following is not used to distinguish ethane from ethane?
A
Iodine in CCl4
B
Bromine in CCl4
C
Alkaline KMnO4
D
Ammonical Cu2Cl2
Question 184Single Answer
To get a n-type doped semiconductor, impurity to be added to silicon should have the following number of valence electrons:
A
1
B
3
C
5
D
2
Question 185Single Answer
Solubility)s) of CaF2 in terms of its solubility product is given a
A
s = (Ksp)1/3
B
s = (Ksp /2)1/3
C
s = (Ksp/4)1/3
D
s = (Ksp/2)1/2
Question 186Single Answer
5 moles of SO2 and 5 moles of O2 are allowed to react to form SO3 in a closed vessel. At the equilibrium stage 60% of SO2 is used up. The total number of mole of SO2, O2 and SO3 in the vessel now is:
A
10.0
B
8.5
C
10.5
D
3.9
Question 187Single Answer
A base, as defined by Bronsted theory, is a substance which can
A
accept protons
B
donate protons
C
lose a pair of electrons
D
gain a pair of electrons
Question 188Single Answer
In the case of small cuts bleeding is stopped by applying potash alum. Here alum acts as:
A
Fungicide
B
Disinfectant
C
Germicide
D
Coagulating agent
Question 189Single Answer
“It is impossible to determine simultaneously the position and velocity of small particles such as electron”. It is a statement of
A
Hund’s rule
B
Aufbau’s principle
C
Pauli’s rule
D
Heisenberg’s uncertainty principle
Question 190Single Answer
The percentage of N2 in urea is about:
A
28
B
18
C
85
D
46
Question 191Single Answer
When salicyclic acid is distilled with zinc dust, the product obtained is:
A
Zinc salicylate
B
Salicylaldehyde
C
Phenol
D
Benzoic acid
Question 192Single Answer
On heating ethanol with excess of conc. H2SO4 at 1700 C, the product obtained is:
A
Ethene
B
Ethoxy ethane
C
Ethyne
D
Ethane
Question 193Single Answer
To calculate the amount of work done in joules during reversible isothermal expansion of an ideal gas, the volume must be expressed in:
A
Dm3 only
B
M3 only
C
Any unit
D
Cm3 unit
Question 194Single Answer
The quantity of electricity required to liberate 112 cm3 of hydrogen at STP from acidified water is:
A
965 coulombs
B
1 faraday
C
0.1 faraday
D
96500 coulombs
Question 195Single Answer
Hydrogen ion concentration of an aqueous solution is 1 × 10-4 M. The solution is diluted with equal volume of water. Hydroxyl ion concentration of the resultant solution in terms of mol dm-3 is:
A
1 × 10-8
B
1 × 10-6
C
2 × 10-10
D
0.5 × 10-10
Question 196Single Answer
The shape of cuprammonium ion is:
A
Trigonal
B
Tetrahedral
C
Octahedral
D
Square planar
Question 197Single Answer
The enthalpy of combustion of C6H6 (l) is -3250 kJ. When 0.39 g of benzene is burnt in excess of oxygen in an open vessel, the amount of heat liberated is:
A
16.25 J
B
16.25 kJ
C
32.5 J
D
32.5 kJ
Question 198Single Answer
The oxidation number and the electronic configuration of sulphur in H2SO4 is:
A
+ 4; 1s2 2s2 2p6 3s2
B
+2; +6; 1s2 2s2 2p6 3s2 3p2
C
+3; 1s2 2s2 2p6 3s2 3p1
D
+6; 1s2 2s2 2p6
Question 199Single Answer
The solubility product of a binary weak electrolyte is 4 × 10-10 at 298 K. Its solubility in mol dm-3 at the same temperature is:
A
4 × 10-5
B
2 × 10-5
C
8 × 10-10
D
16 × 10-20
Question 200Single Answer
Propane is the product obtained by dehydrogenation of:
