Statement I: | Benzenediazonium salt is prepared by the reaction of aniline with nitrous acid at \(273-278~ \text{K}.\) It decomposes easily in the dry state |
Statement II: | Insertion of iodine into the benzene ring is difficult and hence iodobenzene is prepared through the reaction of benzenediazonium salt with \(KI.\) |
1. | Statement I is correct; Statement II is incorrect |
2. | Statement I is incorrect; Statement II is correct |
3. | Both Statement I and Statement II are correct |
4. | Both Statement I and Statement II are incorrect |
Statement I: | Benzendiazonium chloride is a colourless crystalline solid. It is insoluble in water but reacts with water when warmed. |
Statement II: | Benzendiazonium chloride on reacting with HCI in presence of copper powder gives chlorobenzene as the product. This is an example of Gatterman reaction. |
1. | Both Statement I and Statement II is true. |
2. | Both Statement I and Statement II is false. |
3. | Statement I is true but Statement II is false. |
4. | Statement I is false but Statement II is true. |
1. | 2. | ||
3. | 4. |
Statement I: | Primary aliphatic amines react with HNO2 to give unstable diazonium salts. |
Statement II | Primary aromatic amines react with HNO2 to form diazonium salts which are stable even above 300 K. |
1. | Statement I is incorrect but Statement II is correct |
2. | Both Statement I and II are correct |
3. | Both Statement I and II are incorrect |
4. | Statement I is correct but Statement II is incorrect |
1. | 2. | ||
3. | 4. |
The reagent 'R' in the given sequence of a chemical reaction is :
1. | HI | 2. | CuCN/KCN |
3. | H2O | 4. | CH3CH2OH |
The product (A) in the below-mentioned
reaction is:
1. | |
2. | |
3. | |
4. |
The most stable diazonium salt among the following is:
1. \(CH_{3}N_{2}^{+}X^{-}\)
2. \(C_{6}H_{5}N_{2}^{+}X^{-}\)
3. \(CH_{3}CH_{2}N_{2}^{+}X^{-}\)
4. \(C_{6}H_{5}CH_{2}N_{2}^{+}X^{-}\)