| 1 |
Which one of the following disease causes severe diarrhea and can be fatal: |
- A. Jaundic
- B. Dysentery
- C. Cholera
- D. Typhoid
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| 2 |
The process of removing temporary hardness of water. |
- A. Clark's method
- B. Washing soda method
- C. Sodium zeolite
- D. Filteration method
|
| 3 |
The lives of aquatic plants and animals are indirectly related to concentration of dissolved gas in water. |
- A. Nitrogen
- B. Hydrogen
- C. Oxygen
- D. Carbon
|
| 4 |
Neurological damage is caused by the poisoning of. |
- A. Lead
- B. Cadimium
- C. Mercury
- D. All of them
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| 5 |
Permanent hardness can be removed by using . |
- A. Soda lime
- B. Sodium Zeolite
- C. Quick lime
- D. Lime water
|
| 6 |
The bond angle between H-O-H in water is: |
- A. 104.5<sup>o</sup>
- B. 104.6<sup>o</sup>
- C. 104.7<sup>o</sup>
- D. 104.8<sup>o</sup>
|
| 7 |
Freezing point of water is: |
- A. -4°C
- B. 0°C
- C. -36°C
- D. -58°C
|
| 8 |
Hookworm is a parasite that infects the: |
- A. large intestine
- B. small intestine
- C. stomach
- D. liver
|
| 9 |
Density of water at 4°C is: |
- A. 0.976 gem-3
- B. 1 gem-3
- C. 0.956 gem-3
- D. 1.1 gem-3
|
| 10 |
The % age of drinkable water on earth is |
- A. 2.0%
- B. 0.02%
- C. 0.2%
- D. 5.0%
|