Acid Derivatives
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323406 Among the following which one does not act as an intermediate in Hofmann rearrangement?

1 \(\mathrm{RNCO}\)
2 \(\mathrm{RCON}\)
3 \(\mathrm{RCO} \ddot{\mathrm{N}} \mathrm{HBr}\)
4 \(\mathrm{RNC}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323407 The product ' \(\mathrm{C}\) ' in the following reaction is
\({\text{RCOOH}}\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(A)}}\xrightarrow{{{\text{heat}}}}{\text{(B)}}\xrightarrow{{{{\text{P}}_{\text{2}}}{{\text{O}}_{\text{5}}}{\text{, heat}}}}{\text{(C)}}\)

1 \(\mathrm{RNH}_{2}\)
2 \(\mathrm{RCN}\)
3 \(\mathrm{RNC}\)
4 \(\mathrm{RCONH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323408 Guess the product \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{CON}}{{\rm{H}}_{\rm{2}}}\) \(\xrightarrow[\Delta ]{{{\text{PC}}{{\text{l}}_{\text{5}}}}}{\text{?}}\)

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2}-\mathrm{CN}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COCl}\)
3 \(\mathrm{CH}_{3} \mathrm{CCl}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CCl}_{2}-\mathrm{NH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323409 In a set of reaction, propionic acid yielded the compound (D) :
\({\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COOH}}\xrightarrow{{{\text{SOC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COCl(B)}}\)
\(\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(C)}}\xrightarrow{{{\text{KOH/B}}{{\text{r}}_{\text{2}}}}}{\text{(D) }}\)
The structure of compound (D) will be

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NHCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323410 An organic compound ' \({\rm{A}}\) ' on treatment with \(\mathrm{NH}_{3}\) gives ' \(\mathrm{B}\) ' which on heating gives ' \(\mathrm{C}\) ' when treated with \(\mathrm{Br}_{2}\) in presence of \(\mathrm{KOH}\) produces ethylamine. Compound ' \(\mathrm{A}\) ' is

1 \(\begin{array}{l}{\rm{C}}{{\rm{H}}_{\rm{3}}} - {\rm{CHCOOH}}\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left| {} \right.\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{C}}{{\rm{H}}_{\rm{3}}}\end{array}\)
2 \(\mathrm{CH}_{3} \mathrm{COOH}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COOH}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOH}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323406 Among the following which one does not act as an intermediate in Hofmann rearrangement?

1 \(\mathrm{RNCO}\)
2 \(\mathrm{RCON}\)
3 \(\mathrm{RCO} \ddot{\mathrm{N}} \mathrm{HBr}\)
4 \(\mathrm{RNC}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323407 The product ' \(\mathrm{C}\) ' in the following reaction is
\({\text{RCOOH}}\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(A)}}\xrightarrow{{{\text{heat}}}}{\text{(B)}}\xrightarrow{{{{\text{P}}_{\text{2}}}{{\text{O}}_{\text{5}}}{\text{, heat}}}}{\text{(C)}}\)

1 \(\mathrm{RNH}_{2}\)
2 \(\mathrm{RCN}\)
3 \(\mathrm{RNC}\)
4 \(\mathrm{RCONH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323408 Guess the product \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{CON}}{{\rm{H}}_{\rm{2}}}\) \(\xrightarrow[\Delta ]{{{\text{PC}}{{\text{l}}_{\text{5}}}}}{\text{?}}\)

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2}-\mathrm{CN}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COCl}\)
3 \(\mathrm{CH}_{3} \mathrm{CCl}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CCl}_{2}-\mathrm{NH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323409 In a set of reaction, propionic acid yielded the compound (D) :
\({\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COOH}}\xrightarrow{{{\text{SOC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COCl(B)}}\)
\(\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(C)}}\xrightarrow{{{\text{KOH/B}}{{\text{r}}_{\text{2}}}}}{\text{(D) }}\)
The structure of compound (D) will be

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NHCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323410 An organic compound ' \({\rm{A}}\) ' on treatment with \(\mathrm{NH}_{3}\) gives ' \(\mathrm{B}\) ' which on heating gives ' \(\mathrm{C}\) ' when treated with \(\mathrm{Br}_{2}\) in presence of \(\mathrm{KOH}\) produces ethylamine. Compound ' \(\mathrm{A}\) ' is

1 \(\begin{array}{l}{\rm{C}}{{\rm{H}}_{\rm{3}}} - {\rm{CHCOOH}}\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left| {} \right.\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{C}}{{\rm{H}}_{\rm{3}}}\end{array}\)
2 \(\mathrm{CH}_{3} \mathrm{COOH}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COOH}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOH}\)
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323406 Among the following which one does not act as an intermediate in Hofmann rearrangement?

1 \(\mathrm{RNCO}\)
2 \(\mathrm{RCON}\)
3 \(\mathrm{RCO} \ddot{\mathrm{N}} \mathrm{HBr}\)
4 \(\mathrm{RNC}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323407 The product ' \(\mathrm{C}\) ' in the following reaction is
\({\text{RCOOH}}\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(A)}}\xrightarrow{{{\text{heat}}}}{\text{(B)}}\xrightarrow{{{{\text{P}}_{\text{2}}}{{\text{O}}_{\text{5}}}{\text{, heat}}}}{\text{(C)}}\)

1 \(\mathrm{RNH}_{2}\)
2 \(\mathrm{RCN}\)
3 \(\mathrm{RNC}\)
4 \(\mathrm{RCONH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323408 Guess the product \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{CON}}{{\rm{H}}_{\rm{2}}}\) \(\xrightarrow[\Delta ]{{{\text{PC}}{{\text{l}}_{\text{5}}}}}{\text{?}}\)

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2}-\mathrm{CN}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COCl}\)
3 \(\mathrm{CH}_{3} \mathrm{CCl}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CCl}_{2}-\mathrm{NH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323409 In a set of reaction, propionic acid yielded the compound (D) :
\({\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COOH}}\xrightarrow{{{\text{SOC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COCl(B)}}\)
\(\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(C)}}\xrightarrow{{{\text{KOH/B}}{{\text{r}}_{\text{2}}}}}{\text{(D) }}\)
The structure of compound (D) will be

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NHCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323410 An organic compound ' \({\rm{A}}\) ' on treatment with \(\mathrm{NH}_{3}\) gives ' \(\mathrm{B}\) ' which on heating gives ' \(\mathrm{C}\) ' when treated with \(\mathrm{Br}_{2}\) in presence of \(\mathrm{KOH}\) produces ethylamine. Compound ' \(\mathrm{A}\) ' is

1 \(\begin{array}{l}{\rm{C}}{{\rm{H}}_{\rm{3}}} - {\rm{CHCOOH}}\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left| {} \right.\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{C}}{{\rm{H}}_{\rm{3}}}\end{array}\)
2 \(\mathrm{CH}_{3} \mathrm{COOH}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COOH}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOH}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323406 Among the following which one does not act as an intermediate in Hofmann rearrangement?

1 \(\mathrm{RNCO}\)
2 \(\mathrm{RCON}\)
3 \(\mathrm{RCO} \ddot{\mathrm{N}} \mathrm{HBr}\)
4 \(\mathrm{RNC}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323407 The product ' \(\mathrm{C}\) ' in the following reaction is
\({\text{RCOOH}}\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(A)}}\xrightarrow{{{\text{heat}}}}{\text{(B)}}\xrightarrow{{{{\text{P}}_{\text{2}}}{{\text{O}}_{\text{5}}}{\text{, heat}}}}{\text{(C)}}\)

1 \(\mathrm{RNH}_{2}\)
2 \(\mathrm{RCN}\)
3 \(\mathrm{RNC}\)
4 \(\mathrm{RCONH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323408 Guess the product \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{CON}}{{\rm{H}}_{\rm{2}}}\) \(\xrightarrow[\Delta ]{{{\text{PC}}{{\text{l}}_{\text{5}}}}}{\text{?}}\)

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2}-\mathrm{CN}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COCl}\)
3 \(\mathrm{CH}_{3} \mathrm{CCl}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CCl}_{2}-\mathrm{NH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323409 In a set of reaction, propionic acid yielded the compound (D) :
\({\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COOH}}\xrightarrow{{{\text{SOC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COCl(B)}}\)
\(\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(C)}}\xrightarrow{{{\text{KOH/B}}{{\text{r}}_{\text{2}}}}}{\text{(D) }}\)
The structure of compound (D) will be

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NHCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323410 An organic compound ' \({\rm{A}}\) ' on treatment with \(\mathrm{NH}_{3}\) gives ' \(\mathrm{B}\) ' which on heating gives ' \(\mathrm{C}\) ' when treated with \(\mathrm{Br}_{2}\) in presence of \(\mathrm{KOH}\) produces ethylamine. Compound ' \(\mathrm{A}\) ' is

1 \(\begin{array}{l}{\rm{C}}{{\rm{H}}_{\rm{3}}} - {\rm{CHCOOH}}\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left| {} \right.\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{C}}{{\rm{H}}_{\rm{3}}}\end{array}\)
2 \(\mathrm{CH}_{3} \mathrm{COOH}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COOH}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOH}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323406 Among the following which one does not act as an intermediate in Hofmann rearrangement?

1 \(\mathrm{RNCO}\)
2 \(\mathrm{RCON}\)
3 \(\mathrm{RCO} \ddot{\mathrm{N}} \mathrm{HBr}\)
4 \(\mathrm{RNC}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323407 The product ' \(\mathrm{C}\) ' in the following reaction is
\({\text{RCOOH}}\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(A)}}\xrightarrow{{{\text{heat}}}}{\text{(B)}}\xrightarrow{{{{\text{P}}_{\text{2}}}{{\text{O}}_{\text{5}}}{\text{, heat}}}}{\text{(C)}}\)

1 \(\mathrm{RNH}_{2}\)
2 \(\mathrm{RCN}\)
3 \(\mathrm{RNC}\)
4 \(\mathrm{RCONH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323408 Guess the product \({\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{CON}}{{\rm{H}}_{\rm{2}}}\) \(\xrightarrow[\Delta ]{{{\text{PC}}{{\text{l}}_{\text{5}}}}}{\text{?}}\)

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2}-\mathrm{CN}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COCl}\)
3 \(\mathrm{CH}_{3} \mathrm{CCl}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CCl}_{2}-\mathrm{NH}_{2}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323409 In a set of reaction, propionic acid yielded the compound (D) :
\({\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COOH}}\xrightarrow{{{\text{SOC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{COCl(B)}}\)
\(\xrightarrow{{{\text{N}}{{\text{H}}_{\text{3}}}}}{\text{(C)}}\xrightarrow{{{\text{KOH/B}}{{\text{r}}_{\text{2}}}}}{\text{(D) }}\)
The structure of compound (D) will be

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CONH}_{2}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NHCH}_{3}\)
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323410 An organic compound ' \({\rm{A}}\) ' on treatment with \(\mathrm{NH}_{3}\) gives ' \(\mathrm{B}\) ' which on heating gives ' \(\mathrm{C}\) ' when treated with \(\mathrm{Br}_{2}\) in presence of \(\mathrm{KOH}\) produces ethylamine. Compound ' \(\mathrm{A}\) ' is

1 \(\begin{array}{l}{\rm{C}}{{\rm{H}}_{\rm{3}}} - {\rm{CHCOOH}}\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\left| {} \right.\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{C}}{{\rm{H}}_{\rm{3}}}\end{array}\)
2 \(\mathrm{CH}_{3} \mathrm{COOH}\)
3 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COOH}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOH}\)