Water gets polluted by:
Dumping garbage in water bodies
Smoke from vehicles and factories
Chemicals getting thrown into the soil
Burning garbage outdoors
What percentage of water on the earth is fresh?
60%
50%
70%
80%
The gases surrounding the earth is found in :
Lithosphere
Atmosphere
Hydrosphere
Biosphere
Exhaustible resources are classified into:
1
2
3
4
Which is the main source of fresh water on earth?
Oceans
Seas
Rivers
Rain
What percentage of Earth’s surface is covered with water?
1/4 th
2/3 rd
1/3 rd
3/4 th
Natural resources have to be used carefully because:
indiscriminate use of natural resources has resulted in an imbalance in the environment
natural resources are found in abundance in nature
natural resources are renewable
natural resources can be reproduced
The process of water changing into vapour is called:
Evaporation
Condensation
Precipitation
Collection
Which is known as Universal Solvent?
Blood
Saliva
Water
Salt
Water boils at:
10o C
100o C
1000o C
0o C
