Which one is not an example of primary pollutants?
1. DDT 2. CO
3. Pollen 4. PAN
In which part of the atmosphere ‘good ozone’ is found?
1. Troposphere 2. Stratosphere
3. Ionosphere 4. Exosphere
Which one is not an effect of increase in the level of greenhouse gases?
1. fertilisation effect.
2. EI Nino effect.
3. Snow blindness.
4. Warming of troposphere and cooling of stratosphere and thermosphere
Which statement is incorrect for photochemical smog?
1. It is mainly , PAN and .
2. It is called brown air and grey air.
3. It causes blue-baby syndrome.
4. It is formed in traffic congested cities where warm condition and intense solar radiations are present.
It has been recommended that storage of nuclear waste, after sufficient pre-treatment, should be done in suitably shielded containers buried within rocks about _____ deep below the earth’s surface.
1. 100 m
2. 50 m
3. 500 m
4. 200 m
Practical, hygienic, efficient and cost effective solution to human waste disposal is :-
1. Natural toilets
2. Eco-friendly toilets
3. Eco-san toilets
4. Biological sanitation
In which device the exhaust is passed through a spray of water or lime for removal of gases as well as particles ?
1. ESP
2. Scrubber
3. Catalytic converter
4. Both (1) and (2)
Select the correct match with respect to pollutants :-
I II
1. Itai-Itai i.Cd
2. Methaemoglobinemia ii. Hg
3. Acid Rain iii. CFC
4. Most effective green house gas iv. Stone cancer
Which phenomenon is indicated by below reaction:-
1. Acid rain
2. Photochemical smog
3. Ozone depletion
4. Sulphur smog
Catalytic converter of automobiles converts unburnt hydrocarbons into
1.
2.
3.
4.