Environmental Issues · Question 22

Joint Forest Management Concept was introduced in India during :

1. 1990s
2. 1970s
3. 1960s
4. 1980s

A river with an inflow of domestic sewage rich in organic waste may result in -

1. Death of fish due to lack of oxygen
2. Increased population of aquatic food web organisms
3. Drying of the river very soon due to algal bloom
4. An increased production of fish due to biodegradable nutrients

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from

1. petroleum industry
2. sugar industry
3. domestic sewage
4. dairy industry

A lake which is rich in organic waste may result in

1. mortality of fish due to lack of oxygen
2. increased population of fish due to lots of nutrients
3. increased population of aquatic organisms due to minerals
4. drying of the lake due to algal bloom

The highest DDT concentration in aquatic food chain shall occur in

1. crab
2. Phytoplankton
3. eel
4. seagull

Acid rain is caused by increase in the atmospheric concentration of -

1. SO3 and CO
2. CO2 and CO
3. O3 and dust
4. SO2 and NO2

Eutrophication of water bodies leading to killing of fishes is mainly due to nonavailability of

1. light
2. food
3. essential minerals
4. oxygen

The UN conference of Parties on climate change in the year 2012 was held at:

1. Lima
2. Warsaw
3. Doha
4. Durban

Which of the following are most suitable indicators of SO2 pollution in the environment?

1. Conifers
2. Fungi
3. Algae
4. Lichens

Increase in concentration of the toxicant at successive trophic levels is known as:

1. Biomagnification
2. Biotransformation
3. Biodeterioration
4. Biogeochemical cycling