| 1 |
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>
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| 2 |
Which compound protect teeth from diseases? |
- A. Fluorine compound
- B. Chlorine compound
- C. Iodine compound
- D. Bromine compound
|
| 3 |
Which organ cause to function during Jaundice? |
- A. Liver
- B. Kindney
- C. Stomach
- D. Large intestine.
|
| 4 |
Which of the following salt is soluble in water. |
- A. NaCl
- B. KCl
- C. Na<sub>2</sub>SO<sub>4</sub>
- D. All of them
|
| 5 |
Which one of the following diseases causes liver inflammation? |
- A. Typhoid
- B. Jaundice
- C. Cholera
- D. Hapatitis
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| 6 |
Which one of the following gases is used to destroy harmful bacteria in water. |
- A. Iodine
- B. Chlorine
- C. Fluorine
- D. Bromine
|
| 7 |
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.
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| 8 |
Neurological damage is caused by the poisoning of. |
- A. Lead
- B. Cadimium
- C. Mercury
- D. All of them
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| 9 |
Which element protects teeth from decay? |
- A. Potassium
- B. Fluorine
- C. Sodium
- D. Calcium
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| 10 |
Sea water in unfit for drinking purpose die to the presence of. |
- A. Salts
- B. Algae
- C. Fishes
- D. All of them
|