NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
CHXII13:AMINES
324326
Assertion : Aliphatic hydrocarbons undergo nitration easily with conc. in vapour phase not with nitrating mixture. Reason : As alkanes do not have delocalized -electron cloud to attract positively charged nitronium ion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Nitration of alkanes is achieved through vapor-phase treatment with concentrated nitric acid at elevated temperatures due to the non - polar nature of the and the weakly polar -H bonds, preventing attack by polar species under normal conditions. Therefore, aliphatic hydrocarbons undergo nitration easily with conc. in vapour phase. For example, nitration of methane is as follows: So the option (1) is correct.
CHXII13:AMINES
324327
In the above conversion of compound ( X ) to product , the sequence of reagents to be used will be
1 (i) (ii) . (iii) (iv) CuBr
2 (i) (ii) (iii) (iv)
3 (i) (ii) (iii)
4 (i) (ii) (iii)
Explanation:
JEE - 2023
CHXII13:AMINES
324328
A primary nitroalkane is treated with nitrous acid, which of the following will be the main product?
1 Nitrolic acid
2 Pseudonitrol
3 A primary amine
4 A primary alcohol
Explanation:
Primary nitro compound forms nitrolic acid which dissolves in alkali to give red solution.
CHXII13:AMINES
324329
The correct order of increasing reactivity of bond towards nucleophilic substitution reaction in the following compounds is (I) (II) (III) (IV)
1 III II I IV
2 I II IV III
3 II III I IV
4 IV III I II
Explanation:
Electron withdrawing groups at ortho-para increases the reactivity of aryl halides. Stable carbocations favour nucleophilic substitution reactions. Aryl halides are less reactive than alkyl halides towards substitution.
324326
Assertion : Aliphatic hydrocarbons undergo nitration easily with conc. in vapour phase not with nitrating mixture. Reason : As alkanes do not have delocalized -electron cloud to attract positively charged nitronium ion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Nitration of alkanes is achieved through vapor-phase treatment with concentrated nitric acid at elevated temperatures due to the non - polar nature of the and the weakly polar -H bonds, preventing attack by polar species under normal conditions. Therefore, aliphatic hydrocarbons undergo nitration easily with conc. in vapour phase. For example, nitration of methane is as follows: So the option (1) is correct.
CHXII13:AMINES
324327
In the above conversion of compound ( X ) to product , the sequence of reagents to be used will be
1 (i) (ii) . (iii) (iv) CuBr
2 (i) (ii) (iii) (iv)
3 (i) (ii) (iii)
4 (i) (ii) (iii)
Explanation:
JEE - 2023
CHXII13:AMINES
324328
A primary nitroalkane is treated with nitrous acid, which of the following will be the main product?
1 Nitrolic acid
2 Pseudonitrol
3 A primary amine
4 A primary alcohol
Explanation:
Primary nitro compound forms nitrolic acid which dissolves in alkali to give red solution.
CHXII13:AMINES
324329
The correct order of increasing reactivity of bond towards nucleophilic substitution reaction in the following compounds is (I) (II) (III) (IV)
1 III II I IV
2 I II IV III
3 II III I IV
4 IV III I II
Explanation:
Electron withdrawing groups at ortho-para increases the reactivity of aryl halides. Stable carbocations favour nucleophilic substitution reactions. Aryl halides are less reactive than alkyl halides towards substitution.
324326
Assertion : Aliphatic hydrocarbons undergo nitration easily with conc. in vapour phase not with nitrating mixture. Reason : As alkanes do not have delocalized -electron cloud to attract positively charged nitronium ion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Nitration of alkanes is achieved through vapor-phase treatment with concentrated nitric acid at elevated temperatures due to the non - polar nature of the and the weakly polar -H bonds, preventing attack by polar species under normal conditions. Therefore, aliphatic hydrocarbons undergo nitration easily with conc. in vapour phase. For example, nitration of methane is as follows: So the option (1) is correct.
CHXII13:AMINES
324327
In the above conversion of compound ( X ) to product , the sequence of reagents to be used will be
1 (i) (ii) . (iii) (iv) CuBr
2 (i) (ii) (iii) (iv)
3 (i) (ii) (iii)
4 (i) (ii) (iii)
Explanation:
JEE - 2023
CHXII13:AMINES
324328
A primary nitroalkane is treated with nitrous acid, which of the following will be the main product?
1 Nitrolic acid
2 Pseudonitrol
3 A primary amine
4 A primary alcohol
Explanation:
Primary nitro compound forms nitrolic acid which dissolves in alkali to give red solution.
CHXII13:AMINES
324329
The correct order of increasing reactivity of bond towards nucleophilic substitution reaction in the following compounds is (I) (II) (III) (IV)
1 III II I IV
2 I II IV III
3 II III I IV
4 IV III I II
Explanation:
Electron withdrawing groups at ortho-para increases the reactivity of aryl halides. Stable carbocations favour nucleophilic substitution reactions. Aryl halides are less reactive than alkyl halides towards substitution.
324326
Assertion : Aliphatic hydrocarbons undergo nitration easily with conc. in vapour phase not with nitrating mixture. Reason : As alkanes do not have delocalized -electron cloud to attract positively charged nitronium ion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Nitration of alkanes is achieved through vapor-phase treatment with concentrated nitric acid at elevated temperatures due to the non - polar nature of the and the weakly polar -H bonds, preventing attack by polar species under normal conditions. Therefore, aliphatic hydrocarbons undergo nitration easily with conc. in vapour phase. For example, nitration of methane is as follows: So the option (1) is correct.
CHXII13:AMINES
324327
In the above conversion of compound ( X ) to product , the sequence of reagents to be used will be
1 (i) (ii) . (iii) (iv) CuBr
2 (i) (ii) (iii) (iv)
3 (i) (ii) (iii)
4 (i) (ii) (iii)
Explanation:
JEE - 2023
CHXII13:AMINES
324328
A primary nitroalkane is treated with nitrous acid, which of the following will be the main product?
1 Nitrolic acid
2 Pseudonitrol
3 A primary amine
4 A primary alcohol
Explanation:
Primary nitro compound forms nitrolic acid which dissolves in alkali to give red solution.
CHXII13:AMINES
324329
The correct order of increasing reactivity of bond towards nucleophilic substitution reaction in the following compounds is (I) (II) (III) (IV)
1 III II I IV
2 I II IV III
3 II III I IV
4 IV III I II
Explanation:
Electron withdrawing groups at ortho-para increases the reactivity of aryl halides. Stable carbocations favour nucleophilic substitution reactions. Aryl halides are less reactive than alkyl halides towards substitution.
