1. Leguminous plants fix?

Nitrogen
Oxygen
Carbon
Hydrogen

2. Which crop gives oil?

Groundnut
Rice
Wheat
Maize

3. Excess use of fertilizers causes?

Soil pollution
More humus
Healthy soil
Better crops

4. Which practice improves soil water holding?

Adding manure
Adding sand
Removing humus
Over ploughing

5. Which method of weed control uses chemicals?

Using weedicides
Hand pulling
Hoeing
Ploughing

6. Which pulse crop fixes nitrogen?

Legumes
Cereals
Fruits
Fibres

7. Why is soil loosened?

To help roots grow and breathe
To kill crops
To remove water
To store grains

8. Harvesting is done when crops are?

Mature
Young
Seedlings
Dry soil

9. Which crop needs maximum water?

Rice
Wheat
Gram
Mustard

10. Which condition is needed for seed germination?

Water
Salt
Oil
Dust