Environmental Education

1 . The human activity, among the following, which causes maximum environmental pollution having regional and global impact, is

• Industrialization

• Urbanization

• Agriculture

• Mining

In a food chain humans are

• Producers

• Primary consumers

• secondary consumers

• Primary and secondary consumers

Largest reservoir of Nitrogen is exists in :

• Atmosphere

• Stratosphere.

• Hydrosphere

• Lithosphere

'World Environmental Day' is celebrated every year on:

• 5th June

• 5th May

• 18th July

• 5th July

Green revolution is

• Crop variety improvement

• Judicious use of fertilizers

• Expansion of irrigation

• All the above

Percentage of nitrogen in earth's atmosphere is

• 12%

• 78%

• 21%

• 98%

Which atmospheric layer is closest to the Earth's surface?

• Troposphere

• Stratosphere

• Thermosphere

• Mesosphere

Amount of carbon dioxide present in atmospheric air is

• 0.318%

• 0.383%

• 21%

• 78%

Bhopal gas tragedy occurred due to the leakage o

• Methyl Isocyanate

• Mustard gas

• Sulphur dioxide

• Methane gas

As per BIS, the permissible limit of PH value for Drinking water

• 6.5 to 8.5

• 6.5 to 7.5

• 7.0

• 6.0 to 8.5