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Q.1
Which of the following partially miscible liquid pairs has both lower and upper critical solution temperature?
Water and Phenol
Aniline and n-hexane
Glycerine and m-toluene
Water and diethyl aniline
Q.2
0.01 mole of NaOH is added to 10 liters of water. The pH of water changes by
3
4
6
7
Q.3
Which of the following methods is used in determining the number average molar mass of a macromolecule?
Viscosity
Osmotic pressure
Sedimentation equilibrium
Light scattering
Q.4
Ozone consists of
Oxygen only
Oxygen and Nitrogen
Hydrogen and Carbon
Oxygen and Carbon
Q.5
Ozone layer is present in
Ionosphere
Troposphere
Stratosphere
Exosphere
Q.6
The aprotic solvent is
H
2
O
C
6
H
6
HF
NH
3
Q.7
Which of the following has the highest lattice energy?
KF
CsF
NaF
RbF
Q.8
Bleaching action of moist sulphur dioxide is because of its
Basic property
Acidic property
Oxidising property
Reducing property
Q.9
Sulphur dioxide bleaches colouring matter by :
Reduction
Dehydration
Decomposition
Oxidation
Q.10
Molality of pure water is
18.00
1.80
5.55
55.5
Q.11
The presence of ozone in the stratosphere is responsible for
Increasing the average global temperature in recent years
Higher rate of photosynthesis
Checking the penetration of ultraviolet rays to the earth
Supplying oxygen for people travelling in jets
Q.12
Which of the following substance is highly plastic ?
Quartz
Mica
Granite
Clay
Q.13
Which one of the following is commonly used for pulp bleaching in the paper industry?
Mild sulphuric acid
Glucose isomerase
Hydrogen peroxide
Iodine and water
Q.14
In upper layer of atmosphere ozone is formed by
The action of ultraviolet rays on oxygen
The combination of oxygen molecules
Subjecting oxygen to high pressure
The action of nitrogen on oxygen in atmosphere
Q.15
A solution is
A homogeneous mixture of two or more substances
A solid dissolved in a liquid
A solid dissolved i water
A mixture of two liquids
Q.16
The major use of sulphur is in the manufacture of
H
2
SO
4
H
2
S
SO
2
Fungicide
Q.17
Soldering of two metals is possible because of the property of :
Viscosity
Osmosis
Cohesion
Surface tension
Q.18
Which one of the following is used to restore the colour of old oil paintings ?
Ozone
Hydrogen peroxide
Barium peroxide
Sodium peroxide
Q.19
Natural rubber is a polymer of
Vinyl acetate
Propene
Isoprene
Styrene
Q.20
The polymer obtained by the condensation of hexamethylene diamine and adipic acid is :
Nylon 66
Terylene
Tollen's
Bakelite
Q.21
Which one is the most dense liquid from the below?
Water
Choloform
Gasolin
None of the above
Q.22
Percentage of lead in lead pencils is
0
31-66
40
80
Q.23
What is a Bakelite ?
Solution
Acid
Base
Polymer
Q.24
Natural rubber is the polymer of :
Isoprene
Styrene
Butadiene
Ethylene
Q.25
The basic chemical building block of natural rubber obtained from trees is
Isoprene
Vinyl Chloride
Acetylene
Neoprene
Q.26
The buffer action of blood is due to the presence of
HCI and NaCI
CI
–
and [CO
3
]
2–
CI
–
and [HCO
3
]
–
[HCO
3
]
–
and H
2
CO
3
Q.27
Bakelite is a co-polymer of Phenol and
Formaldehyde
Acetaldehyde
Benzaldehyde
Cinnaldehyde
Q.28
Neoprene is prepared by polymerisation of which of the following
2-chloro-1, 3-butadiene
2-methyl 1, 3-butadiene
1,3-butadiene
Acrylonitrile
Q.29
Neoprene is a polymer of
Chloroprene
Isoprene
Isobutane
Isopentane
Q.30
Carborundum is another name of
Silicon carbide
Silicon oxide
Calcium carbide
Calcium oxide
Q.31
German silver is an alloy of
Copper, nickel and silver
Silver, copper and aluminium
Zinc, copper and nickel
Zinc, silver and copper
Q.32
When a lead storage battery is discharged,
SO
2
is evolved
Lead sulphate is consumed
Lead is formed
Sulphuric acid is consumed
Q.33
Which of the following pairs of materials serves as electrodes in rechargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ?
Iron and cadmium
Nickel and cadmium
Lead peroxide and lead
Zinc and carbon
Q.34
The coordination number of body centered atom in cubic structure is
4
6
8
10
Q.35
The product, 9-nitroanthracene is obtained from anthracene by the action of
Nitric acid and acetic anhydride
Nitric acid and ethyl alcohol
Nitric acid and acetic acid
Nitric acid in excess
Q.36
Brass gets discoloured in air due to constant exposure in presence of:
Aluminium phosphide
Hydrogen sulphide
Hydrogenated wafers
Aluminium sulphide
Q.37
Which of the following is not present in German silver?
Copper
Nickel
Silver
Zinc
Q.38
The degree of dissociation of an electrolyte depends on
Dilution
Impurities
Atmospheric pressure
Method of dissolution
Q.39
In the electroplating of gold, the electrolyte used is
Gold chloride
Gold nitrate
Gold sulphate
Potassium aurocyanide
Q.40
What happens when a drop of glycerol is added to crushed KMnO
4
spread on a paper ?
There is a crackling sound
There is a violent explosion.
There is no reaction.
The paper ignites
Q.41
Silver nitrate solution is kept in brown bottles in laboratory because
It reacts with ordinary white bottles
Brown bottles stops the passage of light through it
Brown bottles do not react with it
Brown bottles react with it
Q.42
The name of plastic polymer from which combs, toys, bowls etc., can be made, is
Polyurethane
Polystyrene
Metallic polysulphides
Teflon
Q.43
A polymeric substance used to make parachute is
Rayon
Viscose
Cotton
Terylene
Q.44
Which of the following is not an addition polymer?
Nylon
PVC
Polythene
Polystyrene
Q.45
The polymer used in making plastic crockery is
Decron
Nylon
Bakelite
Melamine
Q.46
Silicone is a polymer of
Tetraalkyl silane
Silicon tetrachloride
Dialkyl dichloro silane
Silane
Q.47
The monomers of dacron are
Decane and decanol
Decanone and decanol
Ethylene glycol and terephthalic acid
Ethylene glygol and phthalic acid
Q.48
Which one of the following does not contain Silver ?
Ruby Silver
Lunar Caustic
German Silver
Horn Silver
Q.49
Type metal used in printing press is an alloy of
Lead and copper
Lead and antimony
Lead and bismuth
Lead and zinc
Q.50
In a Carbonyl group a carbon atom makes double bond with
Carbon
Oxygen
Hydrogen
None of the above
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