12. ALDEHYDES KETONES AND CARBOXYLIC ACIDS[KARNATAKA CET EXCLUSIVE]
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CHEMISTRY(KCET)

285578 An organic compound '\(X\) ' on treatment with PCC in dichloromethane gives the compound \(Y\). Compound \(' Y\) reacts with \(\mathrm{I}_2\) and alkali to form yellow precipitate of triiodomethane. The compound \(X\) is

1 \(\mathrm{CH}_3 \mathrm{CHO}\)
2 \(\mathrm{CH}_3 \mathrm{COCH}_3\)
3 \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}\)
4 \(\mathrm{CH}_3 \mathrm{COOH}\)
CHEMISTRY(KCET)

285579 In set of reactions, identify\(D\).

Ans:d
Exp:(d)
(A)
\(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3 \stackrel{\mathrm{C}_6 \mathrm{H}_6}{\underset{\text { Anhydrous } \mathrm{AlC}_3}{ }}\)
(B)
(D)

CHEMISTRY(KCET)

285580 \(A, B\), and \(C\) respectively are

1 ethanol, ethane nitrile and ethyne
2 ethane nitrile, ethanol and ethyne
3 ethyne, ethanol and ethane nitrile
4 ethyne, ethane nitrile and ethanol.
CHEMISTRY(KCET)

285581 The reagent which can do the conversion,\(\mathrm{CH}_3 \mathrm{COOH} \rightarrow \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH}\) is

1 \(\mathrm{LiAlH}_4\) /ether
2 \(\mathrm{H}_2, \mathrm{Pt}\)
3 \(\mathrm{NaBH}_4\)
4 Na and\(\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\)
CHEMISTRY(KCET)

285578 An organic compound '\(X\) ' on treatment with PCC in dichloromethane gives the compound \(Y\). Compound \(' Y\) reacts with \(\mathrm{I}_2\) and alkali to form yellow precipitate of triiodomethane. The compound \(X\) is

1 \(\mathrm{CH}_3 \mathrm{CHO}\)
2 \(\mathrm{CH}_3 \mathrm{COCH}_3\)
3 \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}\)
4 \(\mathrm{CH}_3 \mathrm{COOH}\)
CHEMISTRY(KCET)

285579 In set of reactions, identify\(D\).

Ans:d
Exp:(d)
(A)
\(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3 \stackrel{\mathrm{C}_6 \mathrm{H}_6}{\underset{\text { Anhydrous } \mathrm{AlC}_3}{ }}\)
(B)
(D)

CHEMISTRY(KCET)

285580 \(A, B\), and \(C\) respectively are

1 ethanol, ethane nitrile and ethyne
2 ethane nitrile, ethanol and ethyne
3 ethyne, ethanol and ethane nitrile
4 ethyne, ethane nitrile and ethanol.
CHEMISTRY(KCET)

285581 The reagent which can do the conversion,\(\mathrm{CH}_3 \mathrm{COOH} \rightarrow \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH}\) is

1 \(\mathrm{LiAlH}_4\) /ether
2 \(\mathrm{H}_2, \mathrm{Pt}\)
3 \(\mathrm{NaBH}_4\)
4 Na and\(\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\)
CHEMISTRY(KCET)

285578 An organic compound '\(X\) ' on treatment with PCC in dichloromethane gives the compound \(Y\). Compound \(' Y\) reacts with \(\mathrm{I}_2\) and alkali to form yellow precipitate of triiodomethane. The compound \(X\) is

1 \(\mathrm{CH}_3 \mathrm{CHO}\)
2 \(\mathrm{CH}_3 \mathrm{COCH}_3\)
3 \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}\)
4 \(\mathrm{CH}_3 \mathrm{COOH}\)
CHEMISTRY(KCET)

285579 In set of reactions, identify\(D\).

Ans:d
Exp:(d)
(A)
\(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3 \stackrel{\mathrm{C}_6 \mathrm{H}_6}{\underset{\text { Anhydrous } \mathrm{AlC}_3}{ }}\)
(B)
(D)

CHEMISTRY(KCET)

285580 \(A, B\), and \(C\) respectively are

1 ethanol, ethane nitrile and ethyne
2 ethane nitrile, ethanol and ethyne
3 ethyne, ethanol and ethane nitrile
4 ethyne, ethane nitrile and ethanol.
CHEMISTRY(KCET)

285581 The reagent which can do the conversion,\(\mathrm{CH}_3 \mathrm{COOH} \rightarrow \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH}\) is

1 \(\mathrm{LiAlH}_4\) /ether
2 \(\mathrm{H}_2, \mathrm{Pt}\)
3 \(\mathrm{NaBH}_4\)
4 Na and\(\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\)
CHEMISTRY(KCET)

285578 An organic compound '\(X\) ' on treatment with PCC in dichloromethane gives the compound \(Y\). Compound \(' Y\) reacts with \(\mathrm{I}_2\) and alkali to form yellow precipitate of triiodomethane. The compound \(X\) is

1 \(\mathrm{CH}_3 \mathrm{CHO}\)
2 \(\mathrm{CH}_3 \mathrm{COCH}_3\)
3 \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}\)
4 \(\mathrm{CH}_3 \mathrm{COOH}\)
CHEMISTRY(KCET)

285579 In set of reactions, identify\(D\).

Ans:d
Exp:(d)
(A)
\(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3 \stackrel{\mathrm{C}_6 \mathrm{H}_6}{\underset{\text { Anhydrous } \mathrm{AlC}_3}{ }}\)
(B)
(D)

CHEMISTRY(KCET)

285580 \(A, B\), and \(C\) respectively are

1 ethanol, ethane nitrile and ethyne
2 ethane nitrile, ethanol and ethyne
3 ethyne, ethanol and ethane nitrile
4 ethyne, ethane nitrile and ethanol.
CHEMISTRY(KCET)

285581 The reagent which can do the conversion,\(\mathrm{CH}_3 \mathrm{COOH} \rightarrow \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH}\) is

1 \(\mathrm{LiAlH}_4\) /ether
2 \(\mathrm{H}_2, \mathrm{Pt}\)
3 \(\mathrm{NaBH}_4\)
4 Na and\(\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\)