| 1 |
Which hepatitis is caused by contaminated water? |
- A. Hepatitis A
- B. Hepatitis B
- C. Hepatitis C
- D. Hepatitis D
|
| 2 |
Water become hard because of: |
- A. Ca+2
- B. Mg+2
- C. SO-24
- D. all of these
|
| 3 |
How many times the heat capacity of water is greater than that of rocks. |
- A. Two
- B. Three
- C. Four
- D. Six
|
| 4 |
Which process is responsible for ascending of water in plants from roots to leaf? |
- A. Condensatin
- B. Transpiration
- C. Capillary action
- D. Evaporation
|
| 5 |
The removal of Mg<sup>+2</sup> and Ca<sup>+2</sup> Ion which are responsible for the hardness of water is called. |
- A. Temporary hardness
- B. Permanent hardness
- C. Water softening
- D. Hydrogen bonding
|
| 6 |
Cause of diarrhoea among following is: |
- A. Diarrhea
- B. Cholera
- C. Cryptosporidium
- D. Typhoid
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| 7 |
Boiling point of water is: |
- A. 0<sup>o</sup>C
- B. 25<sup>o</sup>C
- C. 80<sup>o</sup>C
- D. 100<sup>o</sup>C
|
| 8 |
The percentage of ocean in world water is. |
- A. 50%
- B. 67%
- C. 97%
- D. 25%
|
| 9 |
The percentage of potable water on earth is. |
- A. 2%
- B. 0.2%
- C. 0.02%
- D. 0.002%
|
| 10 |
Clark's method is used to remove the hardness of water, in this method which is used. |
- A. Ca(HCO<sub>3</sub>)<sub>2</sub>
- B. Na-Zeolite
- C. Ca-Zeolite
- D. Ca(OH)<sub>2</sub>
|