1
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { A compound }[X] \text { undergoes reactions as given. Identify compounds }[C] \text { and }[D] \text { formed in these reactions. } $$

COMEDK 2026 Afternoon Shift Chemistry - Alcohol, Phenols and Ethers Question 1 English

$$ [\mathrm{A}] \xrightarrow{\mathrm{Cr}_2 \mathrm{O}_7^{2-} / \mathrm{H}^{+}}[\mathrm{C}] $$

$$ [\text { B }] \xrightarrow[\text { (ii) } \mathrm{Na}_2 \mathrm{CO}_{3(\text { aq })}+\mathrm{I}_2]{\text { (i)aq. } \mathrm{KOH}} [\mathrm{D}] \quad+\mathrm{CH}_3 \mathrm{COONa}$$

A

$$ \text { [C]: Benzoquinone [D]: lodoform } $$

B

[C]: Benzene    [D]: 2-iodo-propane

C

[C]: Benzoic acid    [D]: lodoform

D

$$ \text { [C]: 4-lodophenol   [D]: 1-iodo-propane } $$

2
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

The $\Delta \mathrm{G}^{\circ}$ for the reaction, $C d^{2+}(a q)+Z n(s) \rightarrow Z n^{2+}(a q)+C d(s)$ is:

$\left[E_{C d^{2+} / C d}^o=-0.403, E_{Z n^{2+} / Z n}^o=-0.763 \mathrm{~V}\right]$

A

$-69.5 k J$

B

$-72.2 kJ$

C

$-44.5 kJ$

D

$-50 kJ$

3
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { Identify the correct structure of o-ethyl anisole. } $$

A

COMEDK 2026 Afternoon Shift Chemistry - Alcohol, Phenols and Ethers Question 2 English Option 1

B

COMEDK 2026 Afternoon Shift Chemistry - Alcohol, Phenols and Ethers Question 2 English Option 2

C

COMEDK 2026 Afternoon Shift Chemistry - Alcohol, Phenols and Ethers Question 2 English Option 3

D

COMEDK 2026 Afternoon Shift Chemistry - Alcohol, Phenols and Ethers Question 2 English Option 4

4
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { Identify the reagents, }[A] \text { and }[B] \text { used up when Salicylic acid undergoes the following reactions: } $$

COMEDK 2026 Afternoon Shift Chemistry - Carboxylic Acids and Its Derivatives Question 1 English

A

A: $\frac{\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}}{\mathrm{H}^{+}}$      $\mathrm{B}: \frac{\mathrm{CH}_3 \mathrm{CHO}}{\mathrm{H}^{+}}$

B

A: $\frac{\mathrm{CH}_3 \mathrm{COO}^{-}}{\mathrm{OH}^{-}}$    B: $\frac{\mathrm{CH}_3 \mathrm{Cl}}{\text { (warm) }}$

C

$\mathrm{A}: \frac{\mathrm{CH}_3 \mathrm{OH}}{\mathrm{H}^{+}}$    B: $\frac{\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}}{\mathrm{H}^{+}(\text {warm })}$

D

$$ \mathrm{A}=\frac{\mathrm{CH}_3 \mathrm{COCl}}{(\text { warm })} \quad \mathrm{B}=\frac{\mathrm{CH}_3 \mathrm{Br}}{(\text { warm })} $$