Water Pollution

Which algae grows on water and decrease its biological oxygen demand ?

• Green Algae

• Wondrous Marine Algae

• Algal Bloom

• Chlamydomonas

There are about __________ industrial units at Kanpur

The ambitious plan " Ganga Action Plan" was launched in ________ to cleanse river Ganga

• 1895

• 1985

• 1975

• 1899

Hot water does not act as a pollutant.

• True

• False

Suggest one way to prevent water pollution.

Which of the following is not a modern method of irrigation ?

• Drip Irrigation

• Spray Irrigation

• Sprinkler irrigation

• None of the above

Full Form of RO is ____________

Which of the following does not remove germs from water ?

• Boiling

• Chlorination

• Filtration

• All of the above

Is Ganga one of the ten most endangered rivers in the world ?

• NO

• YES

Excessive use of fertilisers and pesticides should be encouraged.

• True

• False