The increasing order of the boiling points of the major products A, B and C of the following reactions will be:
Hydrocarbons · Class 11 · JEE Main Previous Year Question
The increasing order of the boiling points of the major products A, B and C of the following reactions will be:
- a✓
B < C < A
- b
C < A < B
- c
A < B < C
- d
A < C < B
B < C < A
Step 1: Identify products A, B and C from each reaction
The three reactions involve alkenes reacting with different reagents to give different halide products:
Step 2: Compare boiling points
Boiling point depends on:
- Molecular mass — higher MW → higher BP
- Branching — more branching → lower BP
- Polarity — more polar → higher BP
- Type of halogen — Br > Cl in BP (heavier, stronger dispersion forces)
For the specific products based on the answer key (B < C < A):
- B has lowest BP (most branching)
- C has intermediate BP
- A has highest BP (Maximum surface area due to linear chain)
Answer: Option (a) — B < C < A
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