| 1 |
The freezing point of water is: |
- A. 10 <sup>o</sup>C
- B. 100<sup>o</sup>C
- C. 0<sup>o</sup>C
- D. 46<sup>o</sup>C
|
| 2 |
Which organ cause to function during Jaundice? |
- A. Liver
- B. Kindney
- C. Stomach
- D. Large intestine.
|
| 3 |
Which hepatitis is caused by contaminated water? |
- A. Hepatitis A
- B. Hepatitis B
- C. Hepatitis C
- D. Hepatitis D
|
| 4 |
Inland water includes. |
- A. River
- B. Lakes
- C. Streams
- D. All of them
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| 5 |
Water molecule had a structure; |
- A. non-polar
- B. polar
- C. ionic
- D. tetrahedral
|
| 6 |
The percentage of water in human body is. |
- A. 40%
- B. 50%
- C. 60%
- D. 70%
|
| 7 |
The percentage of ocean in world water is. |
- A. 50%
- B. 67%
- C. 97%
- D. 25%
|
| 8 |
the removal of which ion causes water softening. |
- A. Na<sup>+</sup>
- B. Mg<sup>2</sup>
- C. Li<sup>+</sup>
- D. K<sup>+</sup>
|
| 9 |
The process by which water rises up from the roots of plants to leaves is called. |
- A. Photosynthesis
- B. Respiration
- C. Surface tension
- D. Capillary action
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| 10 |
Salt makes the water permanently hard. |
- A. CaSO<sub>4</sub>
- B. Ca(HCO<sub>3</sub>)<sub>2</sub>
- C. NaHCO<sub>3</sub>
- D. NaCO<sub>3</sub>
|