In 1984, the Bhopal gas tragedy took place because methyl isocyanate:
1. Reacted with ammonia
2. Reacted with CO2
3. Reacted with water
4. Reacted with DDT
Bhopal gas tragedy is related to:
1. Methane
2. Carbon monoxide
3. Methyl Isocyanate (MIC)
4.
Concentration of DDT is highest in:
1. Primary consumer
2. Producers
3. Top consumer
4. Decomposers
Recently Govt. of India has allowed the mixing of alcohol in petrol. What is the amount of alcohol permitted for mixing in petrol:
1. 10–15%
2. 10%
3. 5%
4. 2.5%
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