| 1 |
Acute lead poisoning causes dysfunction of. |
- A. Kidney
- B. Liver
- C. CNS
- D. All of them
|
| 2 |
Temporary hardness can be removed by__________. |
- A. Quick lime
- B. Slaked lime
- C. Lime stone
- D. HCl
|
| 3 |
The density of water is ................. at 4<sup> o</sup>C |
- A. 1 gcm<sup>-1</sup>
- B. 2 gcm<sup>-1</sup>
- C. 3 gcm<sup>-1</sup>
- D. 4 gcm<sup>-1</sup>
|
| 4 |
Which of the following in insoluble in water. |
- A. Benzene
- B. NaCl
- C. KCl
- D. All of them
|
| 5 |
Permanent hardness is removed by adding. |
- A. Na<sub>2</sub> zeolite.
- B. Soda lime
- C. Lime water
- D. Quick lime
|
| 6 |
Permanent hardness can be removed by using . |
- A. Soda lime
- B. Sodium Zeolite
- C. Quick lime
- D. Lime water
|
| 7 |
Some organic compound are soluble in water due to the presence of . |
- A. -OH
- B. H<sup>+</sup>
- C. Botha a and b
- D. Covalent bond
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| 8 |
Hard water can cause. |
- A. Stomach disorder
- B. Boiler blasts
- C. Inefficiency of engine
- D. All of them
|
| 9 |
Calcium carbonate is in water. |
- A. Insoluble
- B. Sparingly
- C. None of them
- D. Soluble
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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>
|