| 1 |
Cholera is caused by |
- A. Protozoa
- B. Virus
- C. Bacteria
- D. Fungi
|
| 2 |
Which disease cause liver inflammation? |
- A. Typhoid
- B. Jaundice
- C. cholera
- D. Hepatitis
|
| 3 |
Swimming pools are cleaned by the process. |
- A. Chlorination
- B. Hydrogenations
- C. Saponification
- D. None of them
|
| 4 |
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>
|
| 5 |
Water has a maximum density at 4 <sup>o</sup>C |
- A. 12 cm<sup>-3</sup>
- B. 2 g cm<sup>-3</sup>
- C. 1 g cm<sup>-3</sup>
- D. 4 gcm<sup>-3</sup>
|
| 6 |
Which one of the following diseases severe diarrhea and can be fatal? |
- A. Joundice
- B. Cholera
- C. Dysentery
- D. Typhoid
|
| 7 |
Which is not a heavy metal. |
- A. Cadmium
- B. Lead
- C. Zinc
- D. Murcury
|
| 8 |
Sodium zeolite is resin of: |
- A. NaAl(SiO<sub>3</sub>)<sub>2</sub>
- B. KAl(SiO<sub>3</sub>)<sub>2</sub>
- C. LiAl(SiO<sub>3</sub>)<sub>2</sub>
- D. RbAl(SiO<sub>3</sub>)<sub>2</sub>
|
| 9 |
Which salt cause permanent hardness in water is: |
- A. Ca(HCO<sub>3</sub>)<sub>2</sub>
- B. Mg(HCO<sub>3</sub>)<sub>2</sub>
- C. CaCl<sub>2</sub>
- D. KCl
|
| 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>
|