| 1 |
Chemical formula of chloroform is : |
- A. CH<sub>2</sub>Cl<sub>2</sub>
- B. CH<sub>3</sub>Cl
- C. CHCl<sub>3</sub>
- D. CCl<sub>4</sub>
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| 2 |
Ethen is prepared by heating a mixture of ethanol and excess of concentrated sulphuric acid at: |
- A. 150°C
- B. 180°C
- C. 250°C - 300°C
- D. 400°C - 450°C
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| 3 |
Volatility of hydrocarbons deceases with: |
- A. decrease of molecular mass
- B. increase of molecular mass
- C. increase of double or triple bonds
- D. decrease of triple bonds
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| 4 |
Condensed formula of ethane is |
- A. C<sub>3</sub>Cl<sub>8</sub>
- B. C<sub>2</sub>Cl<sub>6</sub>
- C. H<sub>3</sub>CCH<sub>3</sub>
- D. None of these
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| 5 |
Molecular formula of butyne is . |
- A. C<sub>4 </sub>H<sub>6</sub>
- B. C<sub>3</sub>H<sub>4</sub>
- C. C<sub>4</sub>H<sub>7</sub>
- D. C<sub>4</sub>H<sub>8</sub>
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| 6 |
Which gas creates suffocation and causes death? |
- A. CO
- B. CO<sub>2</sub>
- C. SO<sub>3</sub>
- D. SO<sub>2</sub>
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| 7 |
Which one of these is a saturated hydrocarbon? |
- A. C<sub>2</sub>H<sub>4</sub>
- B. C<sub>3</sub>H<sub>6</sub>
- C. C<sub>4</sub>H<sub>8</sub>
- D. C<sub>5</sub>H<sub>12</sub>
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| 8 |
Oxidation of ethene with KMnO<sub>4</sub>produces. |
- A. oxalic acid
- B. glyoxal
- C. ethene glycol
- D. Propene glycol
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| 9 |
One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What formula could be of the X. |
- A. C<sub>3</sub>H<sub>8</sub>
- B. C<sub>6</sub>H<sub>12</sub>
- C. C<sub>4</sub>H<sub>10</sub>
- D. C<sub>7</sub>H<sub>16</sub>
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| 10 |
Chloroform is used for |
- A. Anesthesia
- B. Fever
- C. Link
- D. Toys
|