Reaction Mechanisms is an important topic in the Chemistry section in WBJEE exam. Practising this topic will increase your score overall and make your conceptual grip on WBJEE exam stronger.
This article gives you a full set of WBJEE PYQs for Reaction Mechanisms with explanations for effective preparation. Practice of WBJEE Chemistry PYQs including Reaction Mechanisms questions regularly will improve accuracy, speed, and confidence in the WBJEE 2026 exam.
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WBJEE PYQs for Reaction Mechanisms with Solutions
1.
Q and R in the reaction sequences are respectively:
- Hg(OAc)2, NaBH4/OH−; B2H6, H2O2/OH−
- B2H6, H2O2/OH−; H+/H2O
- Hg(OAc)2, NaBH4/OH−; H+/H2O
- B2H6, H2O2/OH−; Hg(OAc)2, NaBH4/OH−
2.
The major product of the following reaction is:
3.
The product ’P’ in the above reaction is:
- \(Ph CH=CHCH_2COOH\)
4.
The reactivity order of the following molecules towards SN1 reaction is:
Allyl chloride (I), Chlorobenzene (II), Ethyl chloride (III)- I>II>III
- I>III>II
- II>I>III
- III>I>II
5.
Ozonolysis of o-xylene produces:
- I:III=1:2
- II:III=2:1
- I:II:III=1:2:3
- I:II:III=3:2:1
6.
The compounds A and B are respectively:
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