2019
Q1
AIIMS
MCQ
10 Mar 2026
Assertion : Propene reacts with $\mathrm{HI}$ in presence of peroxide give 1-iodopropane.
Reason : $1^{\circ}$ free radical is less stable than $2^{\circ}$ free radical.
A.
If both assertion and reason are true and reason is the correct explanation of assertion.
B.
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C.
If assertion is true, but reason is false.
D.
If both assertion and reason are false.
2018
Q2
AIIMS
MCQ
10 Mar 2026
Among the following rules, the one which is applied in the given reaction is
$\mathrm{CH}_3 \mathrm{CHBrCH}_2 \mathrm{CH}_3 \xrightarrow{\text { Alc. } \mathrm{KOH}}$
I. $\mathrm{CH}_3 \mathrm{CH}=\mathrm{CHCH}_3$ (major product)
II. $\mathrm{CH}_2=\mathrm{CHCH}_2 \mathrm{CH}_3$ (minor product)
A.
Saytzeff’s rule
B.
Hofmann 's
C.
Markownikoff’s rule
D.
Kharasch effect
2018
Q3
AIIMS
MCQ
10 Mar 2026
Assertion (A) $\mathrm{CH}_4$ does not react with $\mathrm{Cl}_2$ in dark.
Reason (R) Chlorination of $\mathrm{CH}_4$ takes place in sunlight.
A.
Both (A) and (R) are true and (R) is the correct explanation of (A).
B.
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
C.
(A) is true and (R) is false.
D.
Both (A) and (R) are false.