Which one of the following is a wrong statement?
1. Most of the forests have been lost in tropical areas
2. Ozone in upper part of atmosphere is harmful to animals
3. Greenhouse effect is a natural phenomenon
4. Eutrophication is a natural phenomenon in freshwater bodies
Measuring Biochemical Oxygen Demand (BOD) is a method used for
1. estimating the amount of organic matter in sewage water
2. working out the efficiency of oil driven automobile engines
3. measuring the activity of Saccharomyces cerevisae in producing curd on a commercial
scale
4. working out the efficiency of RBCs about their capacity to carry oxygen
Which one of the following pairs of gases are the major cause of Green house effect?
1. CO2 and CO
2. CFCs and SO2
3. CO2 and N20
4. CO2 and O3
Which one of the following statements is wrong in case Bhopal gas tragedy?
1. Thousands of human beings died
2. Radioactive fall out engulfed Bhopal
3. It took place in the night of December 2/3, 1984
4. Methyl isocynate gas leakage took place
Eutrophication is often seen in
1. fresh water lakes
2. ocean
3. mountains
4. deserts
A renewable exhaustible natural resource is
1. coal
2. petroleum
3. minerals
4. forest
dB is a standard abbreviation used for the quantitative expression of
1. the density of bacteria in a medium
2. a particular pollutant
3. the dominant Bacillus in a culture
4. a certain pesticide
The two gases making highest relative contribution to the greenhouse gases are
1. CO2 and CH4
2. CH4 and NO2
3. CFCs and N20
4. CO2 and N20
Chipko movement was launched for the protection of
1. grasslands
2. forests
3. liverstock
4. wet lands
DDT residues are rapidly passed through food chain causing biomagnification because
DDT is :-
1. lipid soluble
2. moderately toxic
3. non-toxic to aquatic animals
4. water soluble