Which reaction is not appropriate for the synthesis of the following?
1
2
3
4
Official Solution
Correct Option:
(4)
A) Correct B) Correct C) Correct D) Alkyl Lithium does not undergo 1, 4 addition
03
PYQ 2018
medium
chemistryID: wbjee-20
The ease of hydrolysis in the compounds
and is of the order
1
I > II > III > IV
2
IV > III > II > I
3
I > II > IV > III
4
II > I > IV > III
Official Solution
Correct Option:
(1)
The ease of hydrolysis of carbonyl compounds depend on the group attached to the carbonyl carbon. Among the given options, chlorine group is electron withdrawing group which makes the carbonyl group electrophilic. Hence, hydrolysis can occur most easily. The order for electron withdrawing tendency among given options is as follows:
So, the correct order for the ease of hydrolysis in the given compounds is as follows:
04
PYQ 2019
medium
chemistryID: wbjee-20
The compound(s), capable of producing achiral compound on heating at 100°C is/are
1
2
3
4
Official Solution
Correct Option:
(4)
Correct answer is (d)
About Chemical Reactions - WBJEE
Chemical Reactions is a vital chapter for WBJEE aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Chemical Reactions PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Chemical Reactions carry the most weight. Then, tackle the questions iteratively to solidify your understanding.
