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12 grade chemistry others

Pinacolone is:A. 2-3-dimethyl-2, 3-butanediolB.

Pinacolone is:A. 2-3-dimethyl-2, 3-butanediolB. 3,3- dimethyl-2butanoneC. 1-phenyl-2-propanoneD. 1,1-diphenyl-1, 2-ethanediol

Aniket Singh

1 Year agoGrade

1 Answer

Askiitians Tutor Team

1 Year ago

To solve the question regarding the structure of Pinacolone, let’s first understand what Pinacolone is. Pinacolone is the product of the rearrangement of pinacol and can be classified as a ketone.

Steps to determine the correct answer:

Identify the structure of Pinacolone:

Pinacolone is known chemically as 3,3-dimethyl-2-butanone. Its structure includes a ketone functional group (C=O) located on the second carbon of a four-carbon chain, with two methyl groups attached to the third carbon.
Analyze the answer options:

A. 2,3-dimethyl-2,3-butanediol: This compound contains two alcohol (hydroxyl) groups and is not a ketone.
B. 3,3-dimethyl-2-butanone: This matches the structure of Pinacolone perfectly, as it describes a ketone with two methyl groups on the third carbon.
C. 1-phenyl-2-propanone: This compound has a phenyl group, and its structure is not that of Pinacolone.
D. 1,1-diphenyl-1,2-ethanediol: This is also not a ketone and has alcohol functional groups.
Conclusion:

Given the identification of Pinacolone as 3,3-dimethyl-2-butanone and the analysis of the provided options, the correct answer is B. 3,3-dimethyl-2-butanone.
Summary:
Pinacolone is 3,3-dimethyl-2-butanone, which is a ketone, and therefore the answer is B.

is Pradeep Chemistry+Ncert sufficient for all of the theory of Jee Mains Chemistry?

Hi, I’m a self-study JEE 2027 aspirant with a large 11th backlog. Since I don’t think 6–8 hour one-shots are sufficient to cover the full theory + breadth of problem types of a JEE chapter, I’ve shifted from lecture-based preparation to book-based self-study.

I have a problem with using NCERT as my primary chemistry source. In my experience, it is concise and information-heavy, but often lacks detailed explanations, systematic organisation of concepts, and categorisation of problem types. This seems especially problematic for Physical and Organic Chemistry, where I feel that simply reading NCERT may not give enough depth or problem-solving preparation.

So I’m considering this approach:

Pradeep Chemistry → complete the chapter thoroughly from Pradeep → then read NCERT for that chapter → solve JEE Main PYQs/problems.

My main question is:

Is Pradeep + NCERT sufficient as the complete theory source for JEE Main-level Chemistry?

In other words, after thoroughly completing a chapter from Pradeep and then NCERT, can I consider the theory part of that chapter complete for JEE Main, with only PYQs/problem practice remaining?

I’m asking specifically about JEE Main level, not Advanced.

Also, if Pradeep is not sufficient, what specific gap does it leave, and what would you recommend as a better book-based alternative for self-study?

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