Q.1
Sulphur dioxide present in the industrial chimney exhaust gases causes
Q.2
Disinfection of water is done to remove
Q.3
Which of the following pollutants is absent in the emissions from a fertiliser plant ?
Q.4
Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by
Q.5
A man exposed to excessive noise level in the working environment may suffer from
Q.6
Which of the following is not a practical method of low level radioactive waste disposal?
Q.7
Which of the following sources is responsible for maximum air pollution?
Q.8
Which is a secondary air pollutant?
Q.9
Which of the following is a secondary air pollutant?
Q.10
Siderosis is a disease caused by the inhalation of __________ dust.
Q.11
Tri-sodium phosphate is used in boiler water treatment to reduce
Q.12
Water effluent generated in printing industry is decolourised by
Q.13
There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant?
Q.14
Which is the most widely used coagulant for the treatment of turbid water?
Q.15
Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.
Q.16
Presence of a certain minimum quantity of flourine is desirable in potable water to prevent
Q.17
Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by
Q.18
'Pneumoconiosis' is a disease caused by the inhalation of __________ dust.
Q.19
Water filtration rate in a rapid sand filter ranges from __________ kilolitres/m²/hr.
Q.20
Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of
Q.21
Scale formation in boiler is controlled by
Q.22
Corrosion in boilers can be prevented by
Q.23
Iron & manganese present as pollutant in water can not be removed by
Q.24
Which of the following is the most widely used disinfectant in water treatment?
Q.25
Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as
Q.26
Which of the following is an adsorbant for removal of nitrogen oxides from gas/air?
Q.27
Green house effect is accentuated by
Q.28
Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm.
Q.29
Inhalation of silica dust by human being causes
Q.30
Pick out the correct statement.
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