Which of the following is not a greenhouse gas?
Carbon dioxide
Water vapours
Methane
Oxygen
D.
Oxygen
Among all the given gases, oxygen is not a green house gas. Rest carbon dioxide, water vapours and methane are greenhouse gases.
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.
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)
Assertion : Photochemical smog is produced by nitrogen oxides.
Reason : Vehicular pollution is a major source of nitrogen oxides.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.