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Chemistry
1
...
Bar is a unit of
(a) pressure
(b) force
(c) energy
(d) frequency
3
...
Who among the following proposed that atom is indivisible?
(a) Dalton
(b) Berzelius
(c) Rutherford
(d) Avogadro
5
...
J
...
The word ‘insolation’ means
(a) Matters which insulates
(b) Incoming solar radiation
(c) Insoluble matters
(d) None of the above
7
...
Indicate the correct arrangement for electromagnetic radiation in
order of their increasing wavelength(a) Visible, infrared, microwave, X- rays
(b) X – rays, infrared, visible, microwave
(c) Microwave, infrared, visible, X – rays
(d) X- rays, visible, infrared, microwave
9
...
Which electro magnetic radiation is emitted by radioactive
substance(a) Gamma Rays
(b) Radio waves
(c) Micro waves
(d) x – ray
11
...
Isobars are lines displaying areas of equal(a) Humidity
(b) Temperature
(c) Rainfall
(d) Atmospheric pressure
13
...
D
...
J Thomson
(c)`Marie Curie
(d) Pierre Curie

14
...
Heavy water is used as a coolant in nuclear reactors Heavy
water is
(a) Water rich in minerals
(b) Ozonized water
(c) Water containing minerals of heavy metal
(d) Water containg heavy isotope of hydrogen
16
...
Neclear fission is caused by the impact of –
(a) Neutrons
(b) Protons
(c) Deuteron
(d) Electron
18
...
In nuclear raeactors the speed of neutrons is slowed down by –
(a) heavy water
(b) ordinary water
(c) zinc rods
(d) moten caustic soda
20
...
What was the fissionable material used in the bombs dropped
at Nagasaki (Japan) in the years 1945?
(a) Sodium
(c) Potassium
(c) Plutonium
(d) Uranium
22
...
Cobalt – 60 is commonly used in radiation therapy because it
emits(a) α – rays
(b) beta rays
(c) Gamma ray
(d) X – rays
24
...
The acid used in eye wash is
(a) Oxalic acid
(b) nitric acid
(c) Boric acid
(d) None
26
...
Hydrochloric acid is also known as
(a) Garlic acid
(b) Picric acid

(c) Muriatic acid
(d) Chloric acid
28
...
HCI + 1 part of con
...
HCI + 1 part of con
...
H2SO4 + 1 part of con
...
Rate of diffusion of a gas is –
(a) Directly proportional to its density
(b) Directly proportional to its molecular mass
(c) Directly proportional to the square of its molecular mass
(d) Inversely propostional to the square root of its molecular mass
30
...
An ideal gas is one which obeys(a) Gas laws
(b) Boyle‘s laws
(c) Charle‘s law
(d) Avogadro‘s law
32
...
The enzymes are killed(a) At a very high temperature
(b) During chemical reaction
(c) At low temperature
(d) Under atmospheric pressure
34
...
When a gas is subjected to adiabatic expansion, it gets cooled
due to(a) No chage in tntropy
(b) Loss in kinetic energy
(c) Decreases in velocity
(d) Energy spent in doing work36
...
The gas supplied in cylinders for cooking is(a) marsh gas
(b) LPG
(c) Mixture of CH4 and C2H6
(d) Mixture of ethane and propane
38
...
When a gas is turned into a liquid, the process is called(a) Condensation
(b) Evaporation
(c) Deposition
(d) Sublimation
40
...
At high altitudes the boiling point of water lowers because(a) Atmoshperic pressure is low

(b) Atmospheric pressure is high
(c) Temperature is low
(d) None of these
42
...
In galvanization, iron is coated with
(a) Copper
(b) Zinc
(c) Tin
(d) Nickel
44
...
When a few typical solutes are separated by a particular
selective membrane, such as protein particles from blood
corpuscles, the process is called(a) Exosmosis
(b) Dialysis
(c) Transpiration

(d) Endosmosis
46
...
Cod liver is an example of –
(a) Oil emulsion
(b) Oil in water emulsion
(c) Water in oil emulsion
(d) Water in water emulsion
48
...
The blue colour of water in the sea is due to(a) Refraction of the blue light by the impurities in sea water
(b) Scattering of blue light by water molecules
(c) Refraction of blue sky by sea water
(d) Absorption of other colours except the blue colour by water
molecules
50
...
The detergent action of soap is due to its(a) Emulsifying property
(b) Alkalinity
(c) Solubility in water
(d) Preciptating power
52
...

(a) adsorption
(b) emulsification
(c) absorption
(d) coagulation
53
...
Plaster of Paris is made from –
(a) Marble
(b) Bauxite

(c) Limestone
(d) Gypsum
55
...
Barium in a suitable form is administered to patients before an
X –ray examination of the stomach, because(a) barium allows X – rays to pass through the stomach on account
its transparency to X–rays
(b) barium is a good absorber of X– rays and this helps the stomach
to appear clerly in contrast with the other regions in the picture
(c) barium is a good absosrber of X – rays and this helps the
stomach to appear clerly in contrast with the other regions in the
picture
(d) barium slats are white in colour and this help the stomach to
appear clearly in contrast with other region in the pictures
58
...
Chemical formula of washing soda is

(a) Na2 SO4 10 H2 O
(b) NaHCO3
(c) Na2 CO3 10H2O
(d) Ca (OH)2
60
...
Soda ash is the name for:
(a) Sodium hydroxide
(b) Anhydrous sodium carbonate
(c) Sodium bicarbonate
(d) Hydrated sodium carbonate
62
...
The process of sudden cooling is known as –
(a) annealing
(b) diffusion
(c) quenching

(d) sedimentation
64
...

(a) Califonrium
(b) Calcium
(c) Cerium
(d) Cesium
65
...
The ore of Aluminium is
(a) Chalco pyrites
(b) Hematite
(c) Fluorspar
(d) Bauxite
67
...
Annealing process is –
(a) heating the steel bright red and then cooling slowly
(b) heating the steel to a temperature much below redness and
cooling it slowly
(c) beating rods of iron embedded in charcoal powder
(d) heating steel to bright red and cooling suddenly
69
...
Which of the most reactive metal?
(a) Sodium
(b) Calcium
(c) Iron
(d) Potassium
71
...
In the ordinary fire extinguisher, carbon dioxide is generated by
the reaction of
(a) Sodium carbonate and dilute HCI

(b) Sodium bicarbonate and dilute H2SO4
(c) Limestone and dilute H2SO4
(d) Marble powder and dilute HCI
73
...
Water attains maximum density at(a) 0 C
(b) 4 F
(c) 4 k
(d) 4 C
75
...
The velocity of neutrons in nuclear reactor is slowed down by(a) Heavy water (D2O)
(b) Zinc rod
(c) Fused caustic soda
(d) Ordinary water (H2O)

77
...
The chemical used as a fixer /developer in photography
(a) Sodium sulphate
(b) Sodium sulphide
(c) Sodium thiosulphate
(d) Sodium sulphite
79
...
The ultraviolet rays can be checked by –
(a) Flint glass
(b) Crooke‘s glass
(c) Soda glass
(d) Pyrex glass
81
...
Red phosphorus is less reactive than yellow phosphorus
because(a) It is red in colour
(b) it is highly polymerized
(c) It is insoluble in C2H5OH
(d) it is hard
83
...
Photographic plates are coated with a film of(a) AgCI
(b) AgBr
(c) AgI
(d) AgNO3
85
...
The gas used to extinguish fire is –

(a) Neon
(b) Nitrogen
(c) Carbon dioxide
(d) Carbon monoxide
87
...
The pollutan responsible for ozone holes is …………
(a) CO2
(b) SO2
(c) CO
(d) CFC
89
...
In the study of pollution, SPM refers to
(a) Sulphur Phosphorus Matter
(b) Sulphur Particlulate Matter
(c) Solid Particulate Matter

(d) Suspended Particulate Matter
91
...
Gas used for artificial ripening of fruits is:
(a) Ethane
(b) Acetylene
(c) Propane
(d) Methane
93
...
The gas produced in marshy places due to decomposition of
vegetation is
(a) Carbon monoxide
(b) Carbon dioxide
(c) Sulphur dioxide
(d) Methane
95
...
Chemical name of Gammexane is:
(a) Aniline
(b) Toulene
(c) Benzene hexachloride
(d) Chloro benzene
97
...
What happens when a drop of glycerol is added to crush
KMnO4 sprcad on a paper?
(a) There is a crackling sound
(b) There is no reaction
(c) The paper ignites
(d) There is a violent explosion
99
...
Lemon is sour due to(a) Citric acid
(b) Tartaric acid
(c) Oxalic acid
(d) Acetic acid
101
...
Fementation of ethyl alcohol into acetic acid is done by(a) Zymase
(b) Diastase
(c) Maltase
(d) Bacterium mycoderma aceti
103
...
The sweetest of all sugars(a) Glucose only

(b) glucose and galactose
(c) glucose and fructose
(d) glucose and lactose
105
...
The term ‘Carbon foot print’ means
(a) A region which is rich in coal mines
(b) The amount of reduction in the emission of CO2 by a country
(c) The use of Carbon in manufacturing industries
(d) The amount of greenhouse gases produced by our day-to-day
activities
107
...
Global warming may result in(a) Flood
(b) cyclone
(c) Decrease in forest productivity

(d) all of the above
109
...
What
is Marble Cancer?
(a) Smokes filling the Taj Mahal from adjoining industries
(b) Large no
...

(c) Acidic rain which corrodes marble
(d) Yellowing of marble on a/c
...
The substrate of Photorespiration is
...
It is reported that there is an ongoing decrease in the pH
value of ocean water because of global warming
...

112
...
Which one among the following substances is NOT a

‘green house’ gas?
(a) Water vapour
(b) Chlorofluorocarbon
(c) Methane
(d) Nitrogen
114
...
The increasing amount of carbon dioxide in the air is slowly
raising the temperature of atmosphere, because it absobs(a) The water vapours of the air and retains its heat
(b) The ultraviolet part of the solar radiation
(c) All the solar radiations
(d) The infrared part of the solar radiation
116

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