Soil Pollution

Which of the following statement is not true for organic manure?

1. It enhances the water holding capacity of the soil.

2. It has a balance of all plant nutrients.

3. It provides humus to the soil.

4. It improves the texture of the soil.

What are methods for preventing soil erosion?

DDT and BHC are example of __________. (insecticides/pesticides)

1. Weedicides
2. Plastics
3. Manure
4. Fertilisers

We know that many human activities lead to increasing levels of pollution of the air, water bodies, and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollution?

What is soil compaction?

What is the result of too much water given to soil?

Xanthium, Parthenium, Cyperinus are examples of:

1. A biodegradable pollutant

2. A non-degradable pollutant

3. An antibiotic

4. Not a pollutant

What is soil pollution ?

What measures should be adopted to reduce and prevent soil erosion?

One of the following factors does not lead to soil formation in nature

1. The sun

2. Water

3. Wind

4. Polythene bags

Which among the following is a banned insecticide all over the world?

1. DHC - chlorinate dihydro carbons
2. Organo phosphates
3. Malathion
4. DDT- Dichloro Diphenyl Trichloroethane

Which one of the following farming practices will increase the soil fertility?

1. overgrazing of animals

2. adding manure and fertilizers

3. removal of cover crops

4. None of these

1. soil pollution
2. soil weathering
3. soil formation
4. desertification

Give various sources and harmful effects of soil pollution.

1. soil pollution
2. soil weathering
3. soil formation
4. desertification

1. Burying/rotting of dead plants and animals in the soil
2. Indiscriminate use of pesticides, insecticides and fertilizers
3. Dumping of wastes in sea water
4. Planting of crops in soil

Select the correct alternatives.

The prevention of water logging in the clayey soil is due to the presence of ___________

1. organic matter

2. nitrogen

3. oxygen

4. phosphorus

Malathion is used as:

1. Biocide

2. Fungicide

3. Weedicide

4. Insecticide

1. It is carried out in the presence of oxygen
2. It is less effective than incineration
3. All of the above
4. The residues generated by the process of pyrolysis are useful

1. Manure
2. Pesticides
3. Insecticides
4. Fertilizers

Clearance of forest for commercial as well as personal use is known as:

1. Sedimentation

2. Reforestation

3. Deforestation

4. Afforestation

Match the following:

$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{A) Pesticides}& \text{1) Removes unwanted plants in the field}\\ \text{B) Weedicides}& \text{2) Provides nutrients to plants}\\ \text{C) Fertilisers}& \text{3) Protection from diseases and insects}\end{array}$

1. A - 1, B - 3, C - 2

2. A - 1, B - 2, C - 3

3. A - 3, B - 1, C - 2

4. A - 2, B - 1, C - 3

What is biodegradable waste?

1. Excessive use of CFC containing substances
2. Combustion of fossil fuels
3. Wastes from industries
4. Excessive use of automobiles

1. Overuses of fertilizers and pesticides
2. Excessive irrigation
3. Adding manure to soil
4. Pouring effluent from industries

1. Statement 1 is correct but statement 2 is incorrect.
2. Both statements 1 and 2 are correct.
3. Statement 1 is incorrect but statement 2 is correct.
4. Both statements 1 and 2 are incorrect.