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1
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 $A$

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

A compound with molecular formula $\mathrm{C}_5 \mathrm{H}_{10}$ that gives acetone on ozonolysis is:

A

2-methyl-2-butene

B

2-methyl-1-butene

C

3-methyl-1-butene

D

Cyclopentane

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

$$ \text { The decreasing order of reactivity towards electrophilic substitutions is: } $$

COMEDK 2026 Morning Shift Chemistry - Hydrocarbons Question 5 English
A

$I V>I>I I>I H$

B

$I I I>I>I I>I V$

C

$I>I I>I H>I V$

D

$I>I I I>I V>I I$

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

When 2-butyne is treated with dilute $\mathrm{H}_2 \mathrm{SO}_4 / \mathrm{HgSO}_4$, the product formed is:

A

Butanal

B

1-butanol

C

Butanone

D

2-butanol

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