| 1 |
Temporary hardness can be removed by__________. |
- A. Quick lime
- B. Slaked lime
- C. Lime stone
- D. HCl
|
| 2 |
Mercury poisoning cause: |
- A. neurological damage
- B. high blood pressure
- C. kidney damage
- D. gastro
|
| 3 |
Water molecule has a structure: |
- A. Ionic
- B. Non polar
- C. Tetrahedral
- D. Polar
|
| 4 |
Temporary hardness is removed by adding. |
- A. Quick lime
- B. Slaked lime
- C. Lime stone
- D. Lime water.
|
| 5 |
Water which produces good lather with soap is called. |
- A. Soft water
- B. Hard water
- C. Heavy water
- D. All of them
|
| 6 |
The water which produces good lather with soap is called: |
- A. soft water
- B. hard water
- C. heavy water
- D. typical water
|
| 7 |
Which element do not causes toxicity in water? |
- A. Lead
- B. Arsenic
- C. Sodium
- D. Mercury
|
| 8 |
Rapid growth of algae in water bodies is because of detergent having. |
- A. Carbonate salts.
- B. Sulphonic acid salts.
- C. Sulphate salts.
- D. Phosphate salts.
|
| 9 |
The chemical used in Clark's method is: |
- A. CaO
- B. slaked lime(Ca(OH)s)
- C. washing soda
- D. sodium zeolite
|
| 10 |
Gypsum in water is. |
- A. Sparingly soluble
- B. Insoluble
- C. Highly soluble
- D. None of them
|