Question 2:

______ minerals include iron, aluminium, copper, tin, nickel, silver, gold and platinum etc.

Question 3:

The combustion of _______ like coal, petroleum etc is a major cause of air pollution.

Question 4:

_____ plays an important role in the water cycle as water gets evaporated from soil, oceans etc due to Sun’s heat and form clouds. The clouds get cooled by ____ and then these clouds shower as rains. So rainfall depends on the current of the ___.

Question 5:

Soil contains _____, ____, which provide a source for medicines, cosmetics, talcum powders etc.

Question 6:

_______ acts as a universal solvent and gases such as oxygen, nitrogen, carbon dioxide and solids such as salts get readily dissolved with it.

Question 7:

Water exists in three forms: solid, liquid, and ________.

Question 8:

Groundwater gets contaminated due to the use of ________, fertilisers and chemicals and causes serious health hazards to the wildlife in aquatic ecosystems such as diseases, birth defects, and reproductive failure. 

Question 9:

Soil is classified on the basis of its nature and composition. In India we find six main types of soils: 1. _______ , which is rich in loam and clay; 2. _______ , which has predominantly clay; 3. ______, which is sandy to loam; 4. ______, which is stony sandy soil; 5. ______, which is sandy and poor in organic carbon; and 6. ________, which has porous clay rich in iron and aluminium hydroxides.

Question 10:

Major air pollutants include ______, ______, ______.