| 1 |
Just above the Earth's surface is |
- A. Mesosphere
- B. Stratosphere
- C. Theremosphere
- D. Troposphere
|
| 2 |
Which of the following is the hardest coal? |
- A. Pear
- B. Lignite
- C. Bituminous
- D. Anthracite
|
| 3 |
Which gas is responsible in warming the atmosphere? |
- A. Nitrogen
- B. Hydrogen
- C. Helium
- D. Fluorine
|
| 4 |
The number of carbon atoms present in fuel oil. |
- A. 14-18
- B. 15-18
- C. 16-18
- D. 17-18
|
| 5 |
Which one of the following organic compound is found is gasoline? |
- A. C<sub>2</sub>H<sub>4</sub>
- B. C<sub>3</sub>H<sub>8</sub>
- C. C<sub>7</sub>H<sub>10</sub>
- D. C<sub>12</sub>H<sub>26</sub>
|
| 6 |
Which element protects teeth from decay? |
- A. Potassium
- B. Fluorine
- C. Sodium
- D. Calcium
|
| 7 |
Which one of the following is not an air pollutants? |
- A. Nitrogen
- B. Carbon dioxide
- C. Nitrogen oxide
- D. Ozone
|
| 8 |
Which of the following gas is used to destroy harmful bacteria in water. |
- A. Iodine
- B. Chlorine
- C. fluorine
- D. Bromine
|
| 9 |
Guldberg and waage out forward law of mass action in: |
- A. 1889
- B. 1879
- C. 1869
- D. 1859
|
| 10 |
Such reationsin which reactants and products are sufficient in quantities the Kc value of equilibrium state will be |
- A. Very small
- B. Very large
- C. Moderate
- D. None of these
|
