| 1 |
Aromatic compounds are given this name because of; |
- A. smell they have
- B. slippery touch they have
- C. bitter taste they have
- D. sour taste they have
|
| 2 |
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>
|
| 3 |
Coal having 90% carbon contents is called. |
- A. Peat
- B. Lignite
- C. anthracite
- D. bituminous
|
| 4 |
Percentage of methane present in natural gas is. |
- A. 75%
- B. 80%
- C. 85%
- D. 90%
|
| 5 |
Which one of the followoing is the Hardest coal. |
- A. Peat
- B. Lignite
- C. Bituminous
- D. Anthracite
|
| 6 |
The strong heating of coal in the absence of air is called. |
- A. Carbonization
- B. Destructive distillation
- C. Fractional distillation
- D. All
|
| 7 |
Molecular formula of butane is |
- A. C<sub>4</sub>H<sub>8</sub>
- B. C<sub>4</sub>H<sub>10</sub>
- C. C<sub>4</sub>H<sub>12</sub>
- D. C<sub>4</sub>H<sub>6</sub>
|
| 8 |
Chemical formula for urea is: |
- A. NH4CNO
- B. NH4CH
- C. NH2CONH2
- D. NH4CI
|
| 9 |
Main component of Natrual gas. |
- A. CH<sub>3</sub>
- B. CH<sub>4</sub>
- C. C<sub>2</sub>H<sub>6</sub>
- D. C<sub>2</sub>H<sub>2</sub>
|
| 10 |
Formula of acetaldehyde is: |
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