1 |
Which is the substitution reaction in the following? |
- A. Halogenation of alkenes
- B. Halogenation of alkynes
- C. Bromination of alkene
- D. Halogenation of alkanes
|
2 |
General formula of alkynes is: |
- A. C<sub>n</sub>H<sub>n</sub>
- B. C<sub>n</sub>H<sub>2n</sub>
- C. C<sub>n</sub>H<sub>2n+2</sub>
- D. C<sub>n</sub>H<sub>2n-2</sub>
|
3 |
Traces of acetylene are present to coal gas about. |
- A. 0.06 %
- B. 0.08%
- C. 1.1 %
- D. 90%
|
4 |
Oxidation of Ethene with KMnO<sub>4</sub> produces. |
- A. Oxalic acid
- B. Glyoxal
- C. Ethene Glycol
- D. Propene glycol
|
5 |
Chemical formula of chloroform. |
- A. CH<sub>3</sub>Cl
- B. CH<sub>2</sub>O<sub>2</sub>
- C. CHCl<sub>2</sub>
- D. CCl<sub>4</sub>
|
6 |
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>
|
7 |
Dehydration means removal of. |
- A. Water
- B. Halogen
- C. Hydrogen
- D. All above.
|
8 |
The order or reactivity of hydrogen halides with alkenes is. |
- A. HI/Br
- B. HBr > HI
- C. HCl > HBr
- D. HBr>HCl
|
9 |
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
|
10 |
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
|