मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Assertion: Hoffmann’s bromamide reaction is given by primary amines. Reason: Primary amines are more basic than secondary amines.

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प्रश्न

Assertion: Hoffmann’s bromamide reaction is given by primary amines.

Reason: Primary amines are more basic than secondary amines.

पर्याय

  • Both assertion and reason are wrong.

  • Both assertion and reason are correct statements but reason is not correct explanation of assertion.

  • Assertion is correct statement but reason is wrong statement.

  • Both assertion and reason are correct statements and reason is correct explanation of assertion.

  • Assertion is wrong statement but reason is correct statement.

MCQ
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उत्तर

Assertion is correct statement but reason is wrong statement.

Explanation:

Hofmann’s bromamide reaction is given by amides, not by amines. Moreover, primary amines are basic than secondary amines.

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पाठ 13: Amines - Multiple Choice Questions (Type - I) [पृष्ठ १९२]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 13 Amines
Multiple Choice Questions (Type - I) | Q 69 | पृष्ठ १९२

संबंधित प्रश्‍न

Identify the compounds 'A' and 'B' in the following equation:


Write the chemical equation involved in the following reaction:

Hoffmann-bromamide degradation reaction


How do you convert the following: Ethanenitrile to ethanamine


Give the structure of A, B and C in the following reaction:

\[\ce{CH3CH2Br ->[KCN] A ->[LiAlH4] B ->[HNO2][0^\circ C] C}\]


Mention 'two' uses of propan-2-one.


Identify 'A' and 'B' in the following reaction and rewrite the complete reaction :


Answer the following

Identify A and B in the following reactions.

\[\ce{C6H5CH2Br->[alco.][KCN]A ->[Na/ethanol]B.}\]


Answer the following

Explain Gabriel phthalimide synthesis.


Identify 'A' and 'B' in the following conversions.

\[\ce{CH3 - I ->[Alc. KCN][\Delta] A ->[Na/C2H5OH] B}\]


Benzylamine may be alkylated as shown in the following equation:

\[\ce{C6H5CH2NH2 + R - X -> C6H5CH2NHR}\]

Which of the following alkylhalides is best suited for this reaction through SN1 mechanism?


The best reagent for converting, 2-phenylpropanamide into 1- phenylethanamine is ______.


Reduction of nitrobenzene by which of the following reagent gives aniline?

(i) \[\ce{Sn/HCl}\]

(ii) \[\ce{Fe/HCl}\]

(iii) \[\ce{H2 - Pd}\]

(iv) \[\ce{Sn/NH4OH}\]


Identify A and B in the following reaction.


Write following conversions:

nitrobenzene `->` acetanilide


How will you carry out the following conversions?


Assertion: Aromatic 1° amines can be prepared by Gabriel Phthalimide Synthesis.

Reason: Aryl halides undergo nucleophilic substitution with anion formed by phthalimide.


Describe Gabriel's phthalimide synthesis. (Give reaction)


Account for the following:

Aniline cannot be prepared by the ammonolysis of chlorobenzene under normal conditions.


C6H5CONHCH3 can be converted into C6H5CH2NHCH3 by:-


Write a short note on the following:

Ammonolysis.


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