| 1 |
The strone heating of coal in retorts in the absence of air is called. |
- A. Fractional distillation
- B. sublimation
- C. Roasting
- D. Destructive distillation
|
| 2 |
Percentage of methane present in natural gas is. |
- A. 75%
- B. 80%
- C. 85%
- D. 90%
|
| 3 |
In laboratory urea was prepared by |
- A. Wohler
- B. Rutherford
- C. Berzelius
- D. Dalton
|
| 4 |
Coal gas is mixture of |
- A. CO and CH<sub>4</sub>
- B. CO . CH<sub>4</sub>. CO<sub>2</sub>
- C. CO, CH<sub>4</sub>, H<sub>2</sub>
- D. CO, H<sub>2</sub> and CO<sub>2</sub>
|
| 5 |
The branch of chemistry which deals with the study of hydrocarbons and their derivatives is known as. |
- A. Organic chemistry
- B. Inorganic chemistry
- C. Biochemistry
- D. Nuclear chemistry
|
| 6 |
In which of the following groups , oxygen is attached on both sides with carbon atoms. |
- A. Ketone group
- B. Ether group
- C. Aldehyde group
- D. Easter group
|
| 7 |
Formula of Decane is. |
- A. C<sub>10</sub>H<sub>20</sub>
- B. C<sub>10 </sub>H<sub>22</sub>
- C. C<sub>10</sub> H<sub>4</sub>
- D. C<sub>10</sub>H<sub>16</sub>
|
| 8 |
General formula of Alkyl radical is.. |
- A. C<sub>6</sub>H<sub>2n-2</sub>
- B. C<sub>n</sub>H<sub>2n+2</sub>
- C. C<sub>11</sub>H<sub>2n-1</sub>
- D. C<sub>n</sub>H<sub>2n-2</sub>
|
| 9 |
The example of heterocyclic compound is. |
- A. Benzene
- B. Hexane
- C. Cyclohexane
- D. Pyridine
|
| 10 |
Open chain compounds are also called: |
- A. aliphatic compounds
- B. alicyclic compounds
- C. aromatic compounds
- D. hydrocarbons
|