Which of the following isomerism is shown by ethyl acetoacetate?
1
Geometrical isomerism
2
Keto-enol tautomerism
3
Enantiomerism
4
Diastereoisomerism
Official Solution
Correct Option:
(2)
Ethyl acetoacetate undergoes keto-enol tautomerism, where the keto and enol forms are in equilibrium.
02
PYQ 2015
medium
chemistryID: viteee-2
Point out incorrect stability order
1
2
3
4
Official Solution
Correct Option:
(2)
Increasing order of stability (a) $\left[ Cu \left( NH _{3}\right)_{4}\right]^{2+}
03
PYQ 2018
medium
chemistryID: viteee-2
The molecular formula of diphenyl methane, How many structural isomers are possible when one of the hydrogens is replaced by a chlorine atom?
1
6
2
4
3
8
4
7
Official Solution
Correct Option:
(2)
In diphenylmethane monochlorination at following positions will produce structured isomers
04
PYQ 2018
medium
chemistryID: viteee-2
The molecular formula of diphenyl methane, , is . How many structural isomers are possible when one of the hydrogens is replaced by a chlorine atom?
1
6
2
8
3
4
4
7
Official Solution
Correct Option:
(4)
Step 1: Replacing one hydrogen atom in diphenyl methane with chlorine will produce structural isomers depending on the position of chlorine in the benzene ring. Step 2: Considering the positions of the substituents on the phenyl rings, there are a total of 7 possible isomers.
Final Answer:
05
PYQ 2018
medium
chemistryID: viteee-2
The chirality of the compound:
1
2
3
4
Official Solution
Correct Option:
(2)
Step 1: Chirality of a compound refers to the asymmetry in its structure that makes it non-superimposable on its mirror image. A chiral center is a carbon atom with four different substituents. Step 2: The configuration of this compound is , considering the priority of substituents and their orientation.
Final Answer:
About Isomerism - VITEEE
Isomerism is a vital chapter for VITEEE 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 Isomerism 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 Isomerism carry the most weight. Then, tackle the questions iteratively to solidify your understanding.
