Q. No.
Which of the following compounds undergoes nucleophilic substitution reaction most easily?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
p-Dichlorobenzene has a higher melting point than those of o- and m-isomers because :
| 1. | More energy is required to break the crystal lattice of m-dichlorobenzene |
| 2. | More energy is required to break the crystal lattice of p-dichlorobenzene |
| 3. | More energy is required to break the crystal lattice of o-dichlorobenzene |
| 4. | None of the above |
Primary alkyl halide C4H9Br(A) reacted with alcoholic KOH to give compound (B). Compound (B) is reacted with HBr to give (C), and it was found that C is an isomer of (A).
(A) with sodium metal, gives compound (D), C8H18
which is different from the compound formed when n-butyl bromide is reacted with sodium.
Compound (A) is :
1. 2-Methylpropene
2. Isobutyl bromide
3. 2,5-Dimethylhexane
4. 2-Bromo-2-methylpropane
The correct IUPAC name for the following structure is:
1. 2-Chloro-3-methylbutane
2. 3-Chloro-2-methylbutane
3. 2-Chloro-1-methylbutane
4. 3-Chloro-1-methylbutane
A major product is obtained by the dehydrohalogenation of 2-Chloro-2-methyl butane with sodium ethoxide in ethanol. The product's IUPAC name is:
1. 2-Methyl-2-butene
2. 2-Methyl-1-butene
3. 1-Methyl-2-butene
4. Methyl butene
Consider the given two statements:
| Assertion (A): | KCN reacts with methyl chloride to give methyl isocyanide. |
| Reason (R): | \(CN^-\) is an ambident nucleophile. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
The correct match of column I (Reactions) with column II (Name of reactions) is:
| Column I | Column II | ||
| A. |  |
1. | Fittig reaction |
| B. |  |
2. | Wurtz-Fittig reaction |
| C. |  |
3. | Finkelstein reaction |
| D. |  |
4. | Sandmeyer reaction |
Codes:
| A | B | C | D | |
| 1. | 2 | 1 | 4 | 3 |
| 2. | 3 | 1 | 4 | 2 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
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