Soil Pollution

Q.

Repeated use of sodium nitrate fertilizers increases the alkalinity of the soil.

1. False

2. True

Q. Assertion :Excess use of fertilizers causes salt loading to soil. Reason: Fertilizers may develop alkalinity in soil.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Tetanus is caused by ________________ .

1. Protozoa
2. Virus
3. Bacteria
4. Worms

Q.

Vermicompost produced from kitchen waste is far better than chemical fertilisers. Why?

Q. _______ is the change in physical, chemical and biological conditions of the soil through man's intervention resulting in degradation in quantity and productivity of the soil.

1. Soil pollution
2. Water pollution
3. Air pollution
4. None of these

Q. Vermicompost is prepared using _________ .

1. redworms
2. tapeworms
3. roundworms
4. flatworms