Q.1
Global warming is mainly due to accumulation of
Q.2
Which of the following is not a greenhouse gas ?
Q.3
'Acid rain' is caused due to air pollution by
Q.4
The depletion of ozone layer is due to
Q.5
Gas released during Bhopal tragedy was :
Q.6
Which one of the following metals pollutes the air of a city having large number of automobiles?
Q.7
Threshold limit value of copper in the atmospheric air is
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.Carbondioxide1.Enteric fermentation in cattle
G.Methane2.Burning of fossil
H.Chloroflro carbons3.Mercury compounds in waste water
J.Nitrous oxide4.Nylon production
5.Air conditioner and refrigeration units
Codes :
FGHJ
A.2154
B.3421
C.3241
D.1234
Q.9
Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission?
Q.10
Photo chemical smog is a resultant of the reaction among
Q.11
The gas involved in Bhopal incident was
Q.12
Which one of the following was used as a chemical weapon in the first world war ?
Q.13
Sulphur dioxide level in the atmosphere can be reduced by using
Q.14
The term 'brown air' is used for
Q.15
Main pollutants released from iron and steel industry are
Q.16
Which one of the following is a major green house gas?
Q.17
Which is abundant in Gobar gas?
Q.18
Concentration of a material which is lethal to 50% animal is called
Q.19
The filter over which sewage is sprinkled is called as
Q.20
Pollutant from motor car exhaust that causes mental disease is
Q.21
Which substance is used to retard the setting action of cement?
Q.22
The major harmful gas emitted by automobile vehicle which causes air pollution is
Q.23
The major harmful gas emitted by automobile vehicles which causes air pollution is
Q.24
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called
Q.25
Main source of lead pollution is from
Q.26
The Bhopal gas tragedy was caused by the gas
Q.27
Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ?
Q.28
The addition of gypsum to portland cement helps in :
Q.29
Asbestos is formed of :
Q.30
Bayer's reagent is
Q.31
Stalactites and Stalagmites form due to the precipitation of :
Q.32
What is the atomic number of mercury?
Q.33
The chemical name of quartz is
Q.34
An example of heterocyclic compound is
Q.35
In organic compounds, nitrogen is estimated by
Q.36
Wood spirit is
Q.37
When formaldehyde and potassium hydroxide are heated, we get
Q.38
The new strain of bacteria produced by biotechnology in alcohol industry is
Q.39
Mercury is emitted into air by
Q.40
Rectified spirit is :
Q.41
An example of major air pollutant is
Q.42
The Bhopal tragedy was caused by the gas
Q.43
Which gas is most stable at room temperature?
Q.44
Bone ash contains
Q.45
Which of the following is not a precious/semi-precious stone?
Q.46
The chemical substance present in bones and teeth is
Q.47
Which of the following molecules has a bond order of 2.5?
Q.48
An element of atomic no. 29 belongs to
Q.49
What is the most common salt in sea water ?
Q.50
Fertiliser having high nitrogen content is :
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