| 1 |
----------------- is made from food scraps and animal waste. |
- A. Sui gas
- B. Biowater
- C. Biogas
- D. None
|
| 2 |
The fall of moisture on the surface of earth is called. |
- A. River
- B. Ocean
- C. Lake
- D. Precipitation
|
| 3 |
In ........... water turn into water vapours. |
- A. Evaporation
- B. Sublimation
- C. Condensation
- D. Runoff
|
| 4 |
There are oceanin the world. |
|
| 5 |
Lines on map showing equal amount of rain fall are called. |
- A. Baraometer
- B. Rain lines
- C. Isohyet
- D. None of these
|
| 6 |
------------------ is used to kill the germs in water. |
- A. Nitrogen
- B. Oxygen
- C. Chlorine
- D. Sulphur
|
| 7 |
-------------- are water sources found below the surface of earth. |
- A. Lake
- B. Pond
- C. Ocean
- D. Aquifers
|
| 8 |
Available fresh water is on earth.......... |
|
| 9 |
The water absorbed by earth by the process called. |
- A. Runoff
- B. Precipitation
- C. Infiltration
- D. Evaporation
|
| 10 |
The cheapest water purification method is |
- A. Filtration
- B. Distillation
- C. Chlorination
- D. Boiling
|
