Multiple Choice QuestionsWhich of the following has highest concentration of PAN?
Smoke
Ozone
Photochemical smog
Reducing smog
Living in the atmosphere of CO is dangerous, because it
combines with O, present inside to form CO2
reduces organic matter of tissues
combines with haemoglobin and makes it incapable to absorb oxygen
dries up the blood.
Which of the following is not a green house gas?
Hydrogen
Carbon dioxide
Methane
Nitrous oxide or N2O
Green chemistry means such reactions which
are related to the depletion of ozone layer
study the reactions in plants
produce colour during reactions
reduce the use and production of hazardous chemicals.
D.
reduce the use and production of hazardous chemicals.
Green chemistry is the approach in chemical sciences that efficiently uses renewable raw materials, eliminating waste and avoiding the use of toxic and hazardous reagents and solvents in the manufacture and application of chemical products. Green chemistry takes into account the environmental impact.
The radiant energy from the sun is due to :
combustion
chemical reaction
nuclear fusion
nuclear fission
Which of the following chemicals are used to manufacture methyl isocyanate that caused "Bhopal Tragedy"?
(i) methylamine
(ii) phosgene
(iii) phosphine
(iv) dimethylamine
(i) and (iii)
(iii) and (iv)
(i) and (ii)
(ii) and (iv)
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