1
KCET 2022
MCQ (Single Correct Answer)
+1
-0

Reaction by which benzaldehyde cannot be prepared is

A
Benzoic acid $$\xrightarrow{\mathrm{Zn} \cdot \mathrm{Hg} \text { and conc. } \mathrm{HCl}}$$
B
Toluene $$\xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CrO}_2 \mathrm{Cl}_2 \text { in } \mathrm{CS}_2}$$
C
Benzoyl chloride $$+\mathrm{H}_2 \xrightarrow[\Delta]{\text { Pd- } \mathrm{BaSO}_4}$$
D
Benzene $$+\mathrm{CO}+\mathrm{HCl} \xrightarrow{\text { Anhyd. } \mathrm{AlCl}_3}$$
2
KCET 2022
MCQ (Single Correct Answer)
+1
-0

Ethanoic acid undergoes Hell-Volhard Zelinsky reaction but methanoic acid does not, because of

A
presence of $$\alpha$$-$$\mathrm{H}$$ atom in ethanoic acid
B
absence of $$\alpha$$-$$\mathrm{H}$$ atom in ethanoic acid
C
higher acidic strength of ethanoic acid than methanoic acid
D
presence of $$\alpha$$-$$\mathrm{H}$$ atom in methanoic acid
3
KCET 2021
MCQ (Single Correct Answer)
+1
-0

In set of reactions, identify $$D$$

$$\mathrm{CH}_3 \mathrm{COOH} \xrightarrow{\mathrm{SOCl}_2} A \xrightarrow[\text { Anhy. } \mathrm{AlCl}_3]{\text { Benzene }} B \xrightarrow{\mathrm{HCN}} C \xrightarrow{\mathrm{H}_2 \mathrm{O}} D$$

A
KCET 2021 Chemistry - Carboxylic Acids and Its Derivatives Question 3 English Option 1
B
KCET 2021 Chemistry - Carboxylic Acids and Its Derivatives Question 3 English Option 2
C
KCET 2021 Chemistry - Carboxylic Acids and Its Derivatives Question 3 English Option 3
D
KCET 2021 Chemistry - Carboxylic Acids and Its Derivatives Question 3 English Option 4
4
KCET 2021
MCQ (Single Correct Answer)
+1
-0

The reagent which can do the conversion $$\mathrm{CH}_3 \mathrm{COOH} \longrightarrow \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH}$$ is

A
$$\mathrm{LiAlH}_4$$/ ether
B
$$\mathrm{H}_2, \mathrm{Pt}$$
C
$$\mathrm{NaBH}_4$$
D
$$\mathrm{Na}$$ and $$\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}$$
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