1
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0

What are the intermediates formed during the reactions $A$ and $B$ ?

A. Reimer-Tiemann reaction.

B. Dehydration of alcohols in the slow rate determining step.

A
COMEDK 2025 Evening Shift Chemistry - Alcohol, Phenols and Ethers Question 1 English Option 1
B
COMEDK 2025 Evening Shift Chemistry - Alcohol, Phenols and Ethers Question 1 English Option 2
C
COMEDK 2025 Evening Shift Chemistry - Alcohol, Phenols and Ethers Question 1 English Option 3
D
COMEDK 2025 Evening Shift Chemistry - Alcohol, Phenols and Ethers Question 1 English Option 4
2
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Complete the following 2 reactions A \& B by choosing appropriate reactants $[\mathrm{X}] \&[\mathrm{Y}]$.

COMEDK 2025 Afternoon Shift Chemistry - Alcohol, Phenols and Ethers Question 5 English

A
$[\mathrm{X}]=\mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}\qquad$ $[\mathrm{Y}]=\mathrm{CH}_3-\mathrm{CO}-\mathrm{CH}_3$
B
$[\mathrm{X}]=\mathrm{C}_6 \mathrm{H}_5 \mathrm{Br}\qquad$ $[\mathrm{Y}]=\mathrm{CH}_3 \mathrm{CH}_2-\mathrm{N}-\left(\mathrm{CH}_3\right)_2$
C
$[\mathrm{X}]=\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}\qquad$ $[\mathrm{Y}]=\mathrm{C}_6 \mathrm{H}_5-\mathrm{N}-\left(\mathrm{CH}_3\right)_2$
D
$[\mathrm{X}]=\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2\qquad$ $[\mathrm{Y}]=\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}$
3
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
Which one of the following compounds will give a yellow precipitate when reacted with $\mathrm{I}_2 / \mathrm{NaOH}$?
A
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}$
B
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{OH}$
C
$\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{OH}$
D
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CHOH}-\mathrm{CH}_3$
4
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Two statements, One Assertion and the other Reason, are given.

Which one of the following is the correct option?

Assertion: The acid strength of 4 compounds in the descending order is p- Nitrophenol > p-Methoxyphenol > Phenol > p-chlorophenol.

Reason: Electron withdrawing groups increase the acid strength while Electron donating groups decrease the acid strength of Phenol and its derivatives.

A
Assertion is correct but Reason is wrong.
B
Both Assertion and Reason are wrong.
C
Assertion is wrong but Reason is correct.
D
Both Assertion and Reason are correct.
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