Environmental Issues

Which one of the following is not a bioindicator of water pollution?

1. Blood-worms
2. Stone flies
3. Sewage fungus
4. Sludge-worms

Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste waters into natural surface waters, is -

1. <30 ppm
2. <3.0 ppm
3. <100 ppm
4. <10 ppm

Photochemical smog pollution does not contain-

1. Nitrogen dioxide
2. PAN (peroxy acyl nitrate)
3. Ozone
4. Carbon dioxide

Montreal Protocol which calls for appropriate action to protect the ozone layer from human activities was passed in the year-

1. 1988
2. 1986
3. 1985
4. 1987

Prolonged liberal irrigation of agricultural fields is likely to create the problem of -

1. Salinity
2. Acidity
3. Aridity
4. Metal toxicity

Which of the following is not used for disinfection of drinking water ?

1. Chloramine
2. Ozone
3. Chlorine
4. Phenyle

Identify the correctly matched pair -

1. Basel Convention – Biodiversity Conservation
2. Kyoto Protocol – Climatic change
3. Ramsar Convention – Ground water pollution
4. Montreal Protocol – Global warming

Which one of the following pairs is mismatched ?

1. Fossil fuel burning – release of CO2
2. Nuclear power – radioactive wastes
3. Biomass burning – release of CO2
4. Solar energy – greenhouse effect

In 1984, the Bhopal gas tragedy took place because methyl isocyanate :-

1. Reacted with DDT
2. Reacted with water
3. Reacted with ammonia
4. Reacted with CO2

Lead concentration in blood is considered alarming if it is -

1. 4-6 g/100 mL
2. 30 g/100 mL
3. 20 g/100 mL
4. 10 g/100 mL