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NEET & JEE · Chemistry · Class 12

Alcohols Phenols and Ethers — NEET & JEE Chemistry MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

30questions
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Sample questions from this chapter

Which compound is a phenol rather than an alcohol?
  1. C6H5OH ✓
  2. C6H5CH2OH
  3. CH2=CHCH2OH
  4. CH3CH2OH
Answer: A. Phenol has OH directly bonded to an aromatic sp2 carbon. Benzyl alcohol is the closest structural trap because it also contains a phenyl ring but has a CH2 spacer.
Why not B: Its OH is on an sp3 benzylic carbon, so it is benzyl alcohol.
Why not C: Its OH is on an sp3 carbon adjacent to C=C, so it is an allylic alcohol.
Why not D: Ethanol is an ordinary aliphatic alcohol.
Reduction of propanone with NaBH4 gives what product?
  1. Propan-1-ol
  2. Propane
  3. Propan-2-ol ✓
  4. Propanal
Answer: C. Hydride addition to the ketone followed by protonation gives secondary propan-2-ol. Propan-1-ol is the carbonyl-position trap.
Why not A: A terminal primary alcohol would require reduction of propanal.
Why not B: NaBH4 reduces C=O to C-OH rather than removing oxygen completely.
Why not D: A ketone does not reduce to an aldehyde.
Methanal reacts with ethylmagnesium bromide, then undergoes hydrolysis. Which alcohol forms?
  1. Propan-1-ol ✓
  2. Propan-2-ol
  3. Butan-1-ol
  4. Ethanol
Answer: A. C2H5− equivalent adds to HCHO; hydrolysis gives C2H5CH2OH, propan-1-ol. Propan-2-ol is the aldehyde-class trap from forgetting methanal uniquely gives primary alcohol.
Why not B: A secondary alcohol would result from Grignard addition to an aldehyde other than methanal.
Why not C: Ethyl Grignard adds two carbons to methanal's one, giving three total rather than four.
Why not D: This omits the ethyl group added by the Grignard reagent.

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Every NCERT question in this chapter is solved, free: NCERT solutions — Alcohols Phenols and Ethers →

Other NEET Chemistry chapters

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Questions

How many NEET and JEE questions are there on Alcohols Phenols and Ethers?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 12 chapter.

Is this NEET and JEE Chemistry chapter test free?

Yes. Every chapter test is free with no login, and you get your all-India rank on every one. Nothing on the site is on sale right now.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.