| 1 |
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
|
| 2 |
Hydrogenation of alkenes and alkynes takes place at room temperature in the presence of. |
- A. Ni
- B. Pt
- C. Pd
- D. Both a and b
|
| 3 |
Hydrogenation of alkenes and alkynes may be carried out at room temperature in the presence of catalyst: |
- A. Pt or Pd
- B. Ni
- C. Zn
- D. Fe2O3
|
| 4 |
Alkanes are produced in large amounts by cracking of |
- A. Natural gas
- B. Petroleum
- C. Benzene
- D. Xylol
|
| 5 |
The end product of oxidation of acetylene is. |
- A. Propen glycol
- B. Ethan glycol
- C. Glyoxal
- D. Oxalic acid
|
| 6 |
Halogenation of methane produces following valuable chemical compounds used as solvents except. |
- A. Carbonterachloride
- B. Chloroform
- C. Carbon Black
- D. Chloromethane
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| 7 |
Traces of acetylene are present to coal gas about. |
- A. 0.06 %
- B. 0.08%
- C. 1.1 %
- D. 90%
|
| 8 |
The general formula of alkynes is |
- A. C<sub>n </sub>H<sub>2n</sub>
- B. C<sub>n </sub>H<sub>2n+2</sub>
- C. C<sub>n </sub>H<sub>2n-2</sub>
- D. C<sub>n</sub> H<sub>2n+1</sub>
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| 9 |
The order of reactivity of hydrogen halides with alkenes is: |
- A. HI>HBR
- B. HBr>HI
- C. HCl>HBr<div><br></div>
- D. HBr>HCl
|
| 10 |
Which one of these hydrocarbon molecules would have no effect on an aqueous solution of bromine? |
- A. CH<sub>4</sub>
- B. C<sub>10</sub>H<sub>20</sub>
- C. C<sub>2</sub>H<sub>4</sub>
- D. C<sub>2</sub>H<sub>2</sub>
|