NEET Test Series from KOTA - 10 Papers In MS WORD
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ALDEHYDES, KETONES AND CARBOXYLIC ACID
28281
Amides may be converted into amines by a reaction named after :
1 Kekule
2 Perkin
3 Hofmann
4 Claisen
Explanation:
Hofmann's bromamide reaction \(CH _3 \underset{\text { Acetamide }}{- CO }- NH _2+ Br _2+4 KOH \stackrel{ H _2 O }{\longrightarrow} \underset{\text { Methylamine }}{ CH _3- NH _2}+ K _2 CO _3+2 KBr +2 H _2 O\)
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28282
The treatment of an ester with \(LiAlH_4\) followed by acid hydrolysis produces :
1 Two aldehyde
2 One carboxylic acid and one alcohol
3 Two alcohols
4 Two acids
Explanation:
The treatment of an open chain ester with \(LiAlH _4\) followed by acid hydrolysis produces two alcohols. For example, reduction of methyl acetate with lithium aluminum hydride produces methanol and ethanol. \(CH _3 COOCH _3+4\left[ H ^{+}\right] \rightarrow CH _3 CH _2 OH + CH _3 OH\) This reduction can also be carried out by using sodium in the presence of alcohol, or hydrogen gas in the presence of copper chromite catalyst under pressure at \(200-300^{\circ} C\).
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28283
Which of the following is hydrolysed to give secondary amine :
1 Alkyl cyanide
2
3 Nitro paraffins
4 Acid amide
Explanation:
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28284
\(N-\) Ethyl pthalimide on hydrolysis gives :
1 Methyl alcohol
2 Ethyl amine
3 Dimethyl amine
4 Diethyl amine
Explanation:
The alkaline hydrolysis of \(N-\)ethylpthalimide gives ethyl amine.
28281
Amides may be converted into amines by a reaction named after :
1 Kekule
2 Perkin
3 Hofmann
4 Claisen
Explanation:
Hofmann's bromamide reaction \(CH _3 \underset{\text { Acetamide }}{- CO }- NH _2+ Br _2+4 KOH \stackrel{ H _2 O }{\longrightarrow} \underset{\text { Methylamine }}{ CH _3- NH _2}+ K _2 CO _3+2 KBr +2 H _2 O\)
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28282
The treatment of an ester with \(LiAlH_4\) followed by acid hydrolysis produces :
1 Two aldehyde
2 One carboxylic acid and one alcohol
3 Two alcohols
4 Two acids
Explanation:
The treatment of an open chain ester with \(LiAlH _4\) followed by acid hydrolysis produces two alcohols. For example, reduction of methyl acetate with lithium aluminum hydride produces methanol and ethanol. \(CH _3 COOCH _3+4\left[ H ^{+}\right] \rightarrow CH _3 CH _2 OH + CH _3 OH\) This reduction can also be carried out by using sodium in the presence of alcohol, or hydrogen gas in the presence of copper chromite catalyst under pressure at \(200-300^{\circ} C\).
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28283
Which of the following is hydrolysed to give secondary amine :
1 Alkyl cyanide
2
3 Nitro paraffins
4 Acid amide
Explanation:
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28284
\(N-\) Ethyl pthalimide on hydrolysis gives :
1 Methyl alcohol
2 Ethyl amine
3 Dimethyl amine
4 Diethyl amine
Explanation:
The alkaline hydrolysis of \(N-\)ethylpthalimide gives ethyl amine.
28281
Amides may be converted into amines by a reaction named after :
1 Kekule
2 Perkin
3 Hofmann
4 Claisen
Explanation:
Hofmann's bromamide reaction \(CH _3 \underset{\text { Acetamide }}{- CO }- NH _2+ Br _2+4 KOH \stackrel{ H _2 O }{\longrightarrow} \underset{\text { Methylamine }}{ CH _3- NH _2}+ K _2 CO _3+2 KBr +2 H _2 O\)
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28282
The treatment of an ester with \(LiAlH_4\) followed by acid hydrolysis produces :
1 Two aldehyde
2 One carboxylic acid and one alcohol
3 Two alcohols
4 Two acids
Explanation:
The treatment of an open chain ester with \(LiAlH _4\) followed by acid hydrolysis produces two alcohols. For example, reduction of methyl acetate with lithium aluminum hydride produces methanol and ethanol. \(CH _3 COOCH _3+4\left[ H ^{+}\right] \rightarrow CH _3 CH _2 OH + CH _3 OH\) This reduction can also be carried out by using sodium in the presence of alcohol, or hydrogen gas in the presence of copper chromite catalyst under pressure at \(200-300^{\circ} C\).
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28283
Which of the following is hydrolysed to give secondary amine :
1 Alkyl cyanide
2
3 Nitro paraffins
4 Acid amide
Explanation:
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28284
\(N-\) Ethyl pthalimide on hydrolysis gives :
1 Methyl alcohol
2 Ethyl amine
3 Dimethyl amine
4 Diethyl amine
Explanation:
The alkaline hydrolysis of \(N-\)ethylpthalimide gives ethyl amine.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28281
Amides may be converted into amines by a reaction named after :
1 Kekule
2 Perkin
3 Hofmann
4 Claisen
Explanation:
Hofmann's bromamide reaction \(CH _3 \underset{\text { Acetamide }}{- CO }- NH _2+ Br _2+4 KOH \stackrel{ H _2 O }{\longrightarrow} \underset{\text { Methylamine }}{ CH _3- NH _2}+ K _2 CO _3+2 KBr +2 H _2 O\)
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28282
The treatment of an ester with \(LiAlH_4\) followed by acid hydrolysis produces :
1 Two aldehyde
2 One carboxylic acid and one alcohol
3 Two alcohols
4 Two acids
Explanation:
The treatment of an open chain ester with \(LiAlH _4\) followed by acid hydrolysis produces two alcohols. For example, reduction of methyl acetate with lithium aluminum hydride produces methanol and ethanol. \(CH _3 COOCH _3+4\left[ H ^{+}\right] \rightarrow CH _3 CH _2 OH + CH _3 OH\) This reduction can also be carried out by using sodium in the presence of alcohol, or hydrogen gas in the presence of copper chromite catalyst under pressure at \(200-300^{\circ} C\).
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28283
Which of the following is hydrolysed to give secondary amine :
1 Alkyl cyanide
2
3 Nitro paraffins
4 Acid amide
Explanation:
ALDEHYDES, KETONES AND CARBOXYLIC ACID
28284
\(N-\) Ethyl pthalimide on hydrolysis gives :
1 Methyl alcohol
2 Ethyl amine
3 Dimethyl amine
4 Diethyl amine
Explanation:
The alkaline hydrolysis of \(N-\)ethylpthalimide gives ethyl amine.
