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

Pick out the correct option

Assertion(A): Mercury is not considered as a transition element

Reason (R): Mercury is a liquid

A

A is false but R is true

B

Both $A$ and $R$ are true but $R$ is the correct explanation of $A$

C

$A$ is true but $R$ is false

D

Both $A$ and $R$ are true, $R$ is not the correct explanation of $A$

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

$$ \text { Consider the series of reactions given and identify the final product [Z]. } $$

COMEDK 2026 Afternoon Shift Chemistry - Aldehyde and Ketone Question 3 English

$$ [X] \xrightarrow{\mathrm{CrO}_3}[Y] \quad \xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}]{\text { (i) } \mathrm{CH}_3 \mathrm{MgBr}}[Z] $$

A

COMEDK 2026 Afternoon Shift Chemistry - Aldehyde and Ketone Question 3 English Option 1

B

COMEDK 2026 Afternoon Shift Chemistry - Aldehyde and Ketone Question 3 English Option 2

C

COMEDK 2026 Afternoon Shift Chemistry - Aldehyde and Ketone Question 3 English Option 3

D

COMEDK 2026 Afternoon Shift Chemistry - Aldehyde and Ketone Question 3 English Option 4

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

The statements given below contains assertion and reason. Choose the correct option

Assertion (A): Propene reacts with HBr in presence of organic peroxide gives 1-bromopropane.

Reason(R): The reaction occurs through carbocation intermediate

A

A is false but R is true

B

Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$

C

A is true but R is false

D

Both $A$ and $R$ are true, $R$ is the correct explanation of $A$

4
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

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