| 1 |
Cyanogen chloride reacts with ethyl magnesium bromide to give |
- A. CH<sub>3</sub>CH<sub>2</sub>Cl
- B. CH<sub>3</sub>CH<sub>2</sub>Br
- C. C<sub>4</sub>H<sub>10</sub><sup>+</sup>
- D. CH<sub>3</sub>CH<sub>2</sub>CN
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| 2 |
Which one of the following species is not an electrophile. |
- A. HN3
- B. Br
- C. H+
- D. BF3
|
| 3 |
Secondary alkyl halides are those in which halogen atom is attached with a carbon atom which is further attached to. |
- A. One beta carbon
- B. Two beta carbon
- C. Three beta carbon
- D. Four beta carbon
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| 4 |
Alkyl halides are considered to be very reactive compounds towards nucleophile because |
- A. They have an electrophilic carbon
- B. They have an electrophilic carbon and a good leaving group
- C. They have an electrophilic carbon and a bed leaving group
- D. They have a nucleophilic carbon and a good leaving group
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| 5 |
The reactivity order of alkyl halides for a particular alkyl group is. |
- A. Fluoride > Chloride > Bromide > Iodide
- B. Chloride > Bromide >Chloride > Fluoride
- C. Iodide > Bromide > Chloride > Fluoride
- D. Bromide > Iodide > Chloride > Fluoride
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| 6 |
Which one of the following will be required to form ethene from ethyl chloride. |
- A. Alcoholic KOH
- B. Aqueous KOH
- C. Alkaline KMnO4
- D. Bromine
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| 7 |
Elimination biomolecular reactions involve. |
- A. First order kinetics
- B. Second order kinetics
- C. third order kinetics
- D. Zero order kinetics
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| 8 |
For which mechanisms, the first step involved is the same. |
- A. E2 and E2
- B. E2 and SN2
- C. SN1 and E2
- D. E1 and SN1
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| 9 |
SN1 reaction usually occurs in |
- A. Primary alkyl halides
- B. Secondary alkyl halides
- C. Tertiary alkyl halides
- D. All of these
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| 10 |
For which mechanisms, the first step involved is the same |
- A. E<sub>1</sub>and E<sub>2</sub>
- B. E<sub>2</sub>and SN<sub>2</sub>
- C. E<sub>1</sub>and E<sub>2</sub>
- D. E<sub>1</sub>and SN<sub>1</sub>
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