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. \(C_{6}H_{5}CH_{2}N_{2}^{+}X^{-}\)
The incorrect statement among the following regarding the primary amine is:
1. | Alkyl amines are stronger bases than aryl amines |
2. | Alkyl amines react with nitrous acid to produce alcohols |
3. | Aryl amines react with nitrous acid to produce phenols |
4. | Alkyl amines are stronger bases than ammonia |
The structure of C in the below-mentioned reaction is:
1. | |
2. | |
3. | |
4. |
The product (A) in the below-mentioned
reaction is:
1. | 2. | ||
3. | 4. |
Mark the reaction that does not yield aniline from the given options:
1. | Hydrolysis of phenyl isocyanide with an acidic solution |
2. | Degradation of benzamide with bromine in alkaline solution |
3. | Reduction of nitrobenzene with H2/Pd in ethanol |
4. | Treatment of Potassium salt of phthalimide with chlorobenzene followed by hydrolysis in an aqueous NaOH solution |
The correct statement regarding the basicity of arylamines is:
1. | Arylamines are generally more basic than alkylamines because the lone-pair electrons of nitrogen are not delocalized by interaction with the aromatic ring π-electron system. |
2. | Arylamines are generally more basic than alkylamines because of the aryl group +I effect. |
3. | Arylamines are generally more basic than alkylamines because the nitrogen atom in arylamines is sp-hybridized. |
4. | Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring π-electron system. |
A nitrogen-containing aromatic compound A reacts with Sn/HCl, followed by HNO2 to give an unstable compound B. On treatment with phenol, B forms a beautiful coloured compound C with the molecular formula C12H10N2O. The structure of compound A is:
1. | 2. | ||
3. | 4. |
A nitro-compound among the following that does not react with nitrous acid is:
1. | 2. | ||
3. | 4. |
Mark the correct increasing order of basic strength of given molecules:
(I) | (II) | (III) |
1. III < I < II
2. III < II < I
3. II < I < III
4. II < III < I