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

The reagents that can be used to convert benzenediazonium chloride to benzene are: (i) SnClX2/HCl (ii) CHX3CHX2OH (iii) HX3POX2 (iv) LiAlHX4

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प्रश्न

The reagents that can be used to convert benzenediazonium chloride to benzene are:

(i) \[\ce{SnCl2/HCl}\]

(ii) \[\ce{CH3CH2OH}\]

(iii) \[\ce{H3PO2}\]

(iv) \[\ce{LiAlH4}\]

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उत्तर

(ii) \[\ce{CH3CH2OH}\]

(iii) \[\ce{H3PO2}\]

Explanation:

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पाठ 13: Amines - Multiple Choice Questions (Type - I) [पृष्ठ १८६]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 13 Amines
Multiple Choice Questions (Type - I) | Q 31 | पृष्ठ १८६

संबंधित प्रश्‍न

How is ethyl amine prepared from methyl iodide?


How are propan-1-amine and propan-2-amine prepared from oxime?


Give the structures of A, B and C in the following reactions :


Write a short note on the following:

Hoffmann’s bromamide reaction


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

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


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

\[\ce{CH3COOH ->[NH3][\Delta] A ->[NaOBr] B ->[NaNO2/HCl] C}\]


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


Answer in one sentence.

Predict the product of the following reaction.

\[\ce{Nitrobenzene ->[Sn/conc.HCl]?}\]


Answer the following

Explain Gabriel phthalimide synthesis.


Write reactions to prepare ethanamine from Acetonitrile.


Mendius reaction is used to convert _____________


Write reactions to bring about the following conversions.

Acetamide to Ethylamine


Write reactions for the preparation of ethanamine using Gabriel phthalimide synthesis.


____________ can be prepared exclusively by Gabriel phthalimide synthesis.


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


Under which of the following reaction conditions, aniline gives p-nitro derivative as the major product?

(i) Acetyl chloride/pyridine followed by reaction with conc.\[\ce{H2SO4 }\] + conc. \[\ce{HNO3}\].

(ii) Acetic anyhdride/pyridine followed by conc.\[\ce{H2SO4}\] + conc.\[\ce{HNO3}\].

(iii) Dil. HCl followed by reaction with conc.\[\ce{H2SO4}\] + conc.\[\ce{HNO3}\].

(iv) Reaction with conc.\[\ce{HNO3}\] + conc.\[\ce{H2 SO4}\].


Match the reactions given in Column I with the statements given in Column II.

  Column I   Column II
(i) Ammonolysis (a) Amine with lesser number of carbon atoms
(ii) Gabriel phthalimide synthesis (b) Detection test for primary amines.
(iii) Hoffmann Bromamide reaction (c) Reaction of phthalimide with \[\ce{KOH}\] and \[\ce{R-X}\]
(iv) Carbylamine reaction (d) Reaction of alkylhalides with \[\ce{NH3}\]

Which of the following statement(s) is/are incorrect in case of Hofmann bromamide degradation?


Identify the product ‘C’ in the following reaction.

\[\ce{Aniline ->[(CH3CH)2O][Pyridine] A ->[Br2][CH3COOH] B ->[H^+ or OH^-] C}\]


Write short note on the following:

Ammonolysis


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