1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

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

A
$$\mathrm{CH}_3 \mathrm{CHO}$$
B
$$\mathrm{CH}_3 \mathrm{COCH}_3$$
C
$$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}$$
D
$$\mathrm{CH}_3 \mathrm{COOH}$$
2
KCET 2021
MCQ (Single Correct Answer)
+1
-0

KCET 2021 Chemistry - Aldehyde and Ketone Question 3 English

$$A, B$$ and $$C$$ respectively are

A
ethanol, ethane nitrile and ethyne
B
ethane nitrile, ethanol and ethyne
C
ethyne, ethanol and ethane nitrile
D
ethyne, ethane nitrile and ethanol
3
KCET 2021
MCQ (Single Correct Answer)
+1
-0

$$\begin{aligned} & \mathrm{CH}_3 \mathrm{CHO} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}} A \xrightarrow[\Delta]{\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4} \\ & B \xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}, \mathrm{OH}^{-}]{\text {(i) } \mathrm{B}_2 \mathrm{H}_6} C \\ & \end{aligned}$$

$$A$$ and $$C$$ are

A
Identical
B
Position isomers
C
Functional
D
Optical isomers
4
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Which is the most suitable reagent for the following conversion?

KCET 2021 Chemistry - Aldehyde and Ketone Question 1 English

A
Tollen's reagent
B
Benzoyl peroxide
C
$$\mathrm{I}_2$$ and $$\mathrm{NaOH}$$ solution with subsequent acidification
D
$$\mathrm{Sn}$$ and $$\mathrm{NaOH}$$ solution
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