Which of the following is a secondary pollutant:
1. PAN
2. CO
3.
4.
Large-scale death of fish occurs in:
1. Saline lake
2. Oligotrophic lake
3. Eutrophic lake
4. Shallow lake
The main reason for water bloom in rivers, lakes, sea, etc. is:
1. Brown algae and green algae
2. Cyanobacteria and dinoflagellates
3. Eicchornia
4. Fishes
Maximum DDT is present in birds feeding on:
1. Fishes
2. Meat
3. Insects
4. Seeds
Green house effect is:
1. Gardening outside the house
2. Global cooling
3. Global warming
4. Green colour house
The shell of an egg in a bird becomes thin (not properly formed) due to the pollution of pesticides. This is due to interference in the activity of:
1. Ca ATPase
2. Mg ATPase
3. Calmodulin
4. None
Which is the cause of damage to relative biological effectiveness:
1. High temperature
2. Pollution
3. Radiation
4. Low temperature
Which of the following is absent in polluted water:
1. Hydrilla
2. Water hyacinth
3. Larva of stone fly
4. Blue-green algae
Maximum greenhouse gas is released by which country:
1. India
2. France
3. U.S.A.
4. Britain
Fluoride pollution mainly affects:
1. Brain
2. Heart
3. Teeth
4. Kidney