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Quiz 17
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Q.1
Global warming is mainly due to accumulation of
Oxides of nitrogen
Oxides of sulphur
Carbon dioxide
Carbon monoxide
Q.2
Which of the following is not a greenhouse gas ?
Hydrogen
Carbon dioxide
Nitric oxide
Chlorofluorocarbon
Q.3
'Acid rain' is caused due to air pollution by
Carbon dioxide
Carbon monoxide
Methane
Nitrous oxide and sulphur dioxide
Q.4
The depletion of ozone layer is due to
Chlorofluorocarbons
Carbon dioxide
Sulphur dioxide
Ethane
Q.5
Gas released during Bhopal tragedy was :
Sodium isothiocyanate
Potassium isothiocyanate
Ethyl isocyanate
Methyl isocyanate
Q.6
Which one of the following metals pollutes the air of a city having large number of automobiles?
Cadmium
Chromium
Lead
Copper
Q.7
Threshold limit value of copper in the atmospheric air is
0.001 mg/m
3
0.01 mg/m
3
1.0 mg/m
3
5.0 mg/m
3
Q.8
Match the List-I with List-II and select the correct answer using the codes given below the lists
List-I (Green house gas)
List-II(Major source)
F.
Carbondioxide
1.
Enteric fermentation in cattle
G.
Methane
2.
Burning of fossil
H.
Chloroflro carbons
3.
Mercury compounds in waste water
J.
Nitrous oxide
4.
Nylon production
5.
Air conditioner and refrigeration units
Codes :
F
G
H
J
A.
2
1
5
4
B.
3
4
2
1
C.
3
2
4
1
D.
1
2
3
4
A
B
C
D
Q.9
Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission?
China, USA, European Union, India
USA, India, China, European Union
China, India, European Union, USA
European Union, China, USA, India
Q.10
Photo chemical smog is a resultant of the reaction among
High concentration of NO
2
, O
3
, and CO in the evening
CO, CO
2
and NO
2
at low temperature
CO, O
2
and peroxy acetyl nitrate in the presence of Sunlight
NO
2
, O
3
and peroxy acetyl nitrate in the presence of Sunlight
Q.11
The gas involved in Bhopal incident was
Hydrogen sulphide
Nitrogen dioxide
Methyl chloride
Methyl isocyanate
Q.12
Which one of the following was used as a chemical weapon in the first world war ?
Carbon monoxide
Hydrogen cyanide
Mustard gas
Water gas
Q.13
Sulphur dioxide level in the atmosphere can be reduced by using
More efficient car engines
Catalytic converters in industry
Static electricity to attract it in factory chimneys
Low - sulphur fuels
Q.14
The term 'brown air' is used for
Acid fumes
Photochemical smog
Sulphurous smog
Industrial smog
Q.15
Main pollutants released from iron and steel industry are
CO, CO
2
and SO
2
NO, SO
3
and H
2
S
CO
2
, H
2
S and NO
2
CO
2
, NO
2
and SO
3
Q.16
Which one of the following is a major green house gas?
Carbon dioxide
Chloro fluorocarbon
Carbon monoxide
Freon
Q.17
Which is abundant in Gobar gas?
Carbon dioxide
Methane
Oxygen
Hydrogen
Q.18
Concentration of a material which is lethal to 50% animal is called
LD
50
LC
50
NOAEL
ADI
Q.19
The filter over which sewage is sprinkled is called as
Trickling filter
Percolating filter
Contact bed
Intermittent sand filter
Q.20
Pollutant from motor car exhaust that causes mental disease is
Lead
NO
2
SO
2
Hg
Q.21
Which substance is used to retard the setting action of cement?
CaO
Al
2
O
3
CaSO
4
.2H
2
O
Na
2
O + K
2
O
Q.22
The major harmful gas emitted by automobile vehicle which causes air pollution is
Carbon Monoxide
Methane
Carbon dioxide
Ozone gas
Q.23
The major harmful gas emitted by automobile vehicles which causes air pollution is
Carbon Monoxide
Methane
Carbon dioxide
Ozone gas
Q.24
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called
Mists
Fumes
Aerosols
Smoke
Q.25
Main source of lead pollution is from
Sewage
Leaded gasoline
Tobacco
Insecticides
Q.26
The Bhopal gas tragedy was caused by the gas
Methyl chloride
Methyl Isocyanide
Methyl Isocyanate
Methyl Cyanide
Q.27
Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ?
Landfills
Incineration
Pyrolysis and Gasification
All the above
Q.28
The addition of gypsum to portland cement helps in :
Increasing the strength of cement
Rapid setting of cement
Preventing rapid setting of cement
Reduction in the cost of cement
Q.29
Asbestos is formed of :
Calcium and Magnesium
Copper, Zinc and Manganese
Lead and Iron
Calcium and Zinc
Q.30
Bayer's reagent is
Alkaline potassium permanganate
Acidified potassium permanganate
Hydrogen peroxide
Bromine water
Q.31
Stalactites and Stalagmites form due to the precipitation of :
CaCO
3
CaCl
2
MgCl
2
MgCO
3
Q.32
What is the atomic number of mercury?
32
41
63
80
Q.33
The chemical name of quartz is
Calcium oxide
Calcium phosphate
Sodium phosphate
Sodium silicate
Q.34
An example of heterocyclic compound is
Naphthalene
Furan
Benzene
Anthracene
Q.35
In organic compounds, nitrogen is estimated by
Carius method
Victor-Meyer's method
Liebig's method
Dumas method
Q.36
Wood spirit is
Methyl alcohol
Ethyl alcohol
Butyl alcohol
Propyl alcohol
Q.37
When formaldehyde and potassium hydroxide are heated, we get
Acetylene
Methyl alcohol
Methane
Ethyl formate
Q.38
The new strain of bacteria produced by biotechnology in alcohol industry is
Escherichia coli
Saccharomyces cerevisiae
Bacillus subtilis
Pseudomonas putida
Q.39
Mercury is emitted into air by
Burning coal
Burning garbage
Coal fire
Steam engine
Q.40
Rectified spirit is :
95% ethyl alcohol
100% ethyl alcohol
Methylated spirit
Tincture iodine
Q.41
An example of major air pollutant is
Oxygen
Carbon monoxide
Helium
Carbon dioxide
Q.42
The Bhopal tragedy was caused by the gas
Phosgene
Carbon monoxide
Methyl isocyanate
Chlorine
Q.43
Which gas is most stable at room temperature?
H
2
N
2
F
2
O
2
Q.44
Bone ash contains
Calcium sulphate
Phosphoric sulphate
Calcium phosphate
Calcium hypophosphate
Q.45
Which of the following is not a precious/semi-precious stone?
Sapphire
Ruby
Pearl
Emerald
Q.46
The chemical substance present in bones and teeth is
Calcium phosphate
Calcium chloride
Calcium sulphate
Calcium borate
Q.47
Which of the following molecules has a bond order of 2.5?
HCL
CO
F
2
NO
Q.48
An element of atomic no. 29 belongs to
S-block
D-block
P-block
F-block
Q.49
What is the most common salt in sea water ?
Calcium carbonate
Potassium chloride
Sodium chloride
Magnesium sulphate
Q.50
Fertiliser having high nitrogen content is :
Urea
Ammonium sulphate
Ammonium nitrate
Calcium citrate
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