1
WB JEE 2024
MCQ (More than One Correct Answer)
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Which of the following statements about the $$\mathrm{S}_{\mathrm{N}} 2$$ reaction mechanism is/are true?

A
The rate of reaction increases with increasing nucleophilicity.
B
The number 2 denotes a second order reaction.
C
Tertiary butyl substrates do not follow this mechanism.
D
The optical rotation of substrates always changes from (+) to $$(-)$$ or from $$(-)$$ to (+) in the products.
2
WB JEE 2020
MCQ (More than One Correct Answer)
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Which of the following reactions give(s) a meso-compound as the main product?
A
WB JEE 2020 Chemistry - Hydrocarbons Question 13 English Option 1
B
WB JEE 2020 Chemistry - Hydrocarbons Question 13 English Option 2
C
WB JEE 2020 Chemistry - Hydrocarbons Question 13 English Option 3
D
WB JEE 2020 Chemistry - Hydrocarbons Question 13 English Option 4
3
WB JEE 2020
MCQ (More than One Correct Answer)
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$$Me - C \equiv C - Me\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{EtOH, - 33^\circ C}^{Na/N{H_3}(liq.)}} \underline{\underline X} \,\buildrel {dil.alkaline\,KMn{O_4}} \over \longrightarrow \,\text{Product(s)}$$

The product(s) from the above reaction will be
A
WB JEE 2020 Chemistry - Hydrocarbons Question 12 English Option 1
B
WB JEE 2020 Chemistry - Hydrocarbons Question 12 English Option 2
C
WB JEE 2020 Chemistry - Hydrocarbons Question 12 English Option 3
D
WB JEE 2020 Chemistry - Hydrocarbons Question 12 English Option 4
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