Alcohols, Phenols & Ethers · JEE Main previous year questions

2025 9 questions

1. Q682025 · 8 Apr 2025 · Shift 2
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: B

2. Q692025 · 8 Apr 2025 · Shift 2

   Match the \textbf{LIST-I} with \textbf{LIST-II} $$\begin{array}{ll}\text{LIST-I (Reagent)}& \text{LIST-II (Functional Group detected)}\\ \text{A. Sodium bicarbonate solution}& \text{I. double bond/unsaturation}\\ \text{B. Neutral ferric chloride}& \text{II. carboxylic acid}\\ \text{C. ceric ammonium nitrate}& \text{III. phenolic - OH}\\ \text{D. alkaline }\mathrm{KMn}{\mathrm{O}}_4& \text{IV. alcoholic - OH}\end{array}$$ Choose the \textit{correct} answer from the options given below:

   1. A.A-II, B-III, C-I, D-IV
   2. B.A-II, B-IV, C-III, D-I
   3. C.A-III, B-II, C-IV, D-I
   4. D.A-II, B-III, C-IV, D-I
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   Answer: D

3. Q532025 · 3 Apr 2025 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: C

4. Q702025 · 3 Apr 2025 · Shift 1

   Number of molecules from below which cannot give iodoform reaction is : Ethanol, Isopropyl alcohol, Bromoacetone, 2-Butanol, 2-Butanone, Butanal, 2-Pentanone, 3- Pentanone, Pentanal and 3-Pentanol.

   1. A.4
   2. B.3
   3. C.5
   4. D.2
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   Answer: A

5. Q622025 · 2 Apr 2025 · Shift 1

   An optically active alkyl halide ${\mathrm{C}}_4{\mathrm{H}}_9\mathrm{Br}[\mathrm{A}]$ reacts with hot $\mathrm{KOH}$ dissolved in ethanol and forms alkene $[B]$ as major product which reacts with bromine to give dibromide $[C]$. The compound $[C]$ is converted into a gas $[D]$ upon reacting with alcoholic ${\mathrm{NaNH}}_2$. During hydration 18 gram of water is added to 1 mole of gas [D] on warming with mercuric sulphate and dilute acid at 333 K to form compound [E]. The IUPAC name of compound [ E ] is :

   1. A.Butan-2-ol
   2. B.But-2-yne
   3. C.Butan-2-one
   4. D.Butan-1-al
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   Answer: C

6. Q522025 · 2 Apr 2025 · Shift 2
   
   1. A.(A)-(III), (B)-(II), (C)-(IV), (D)-(I)
   2. B.(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
   3. C.(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
   4. D.(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
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   Answer: D

7. Q752025 · 2 Apr 2025 · Shift 2· Numerical answer
   
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   Answer: 184

8. Q602025 · 29 Jan 2025 · Shift 2
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: A

9. Q562025 · 23 Jan 2025 · Shift 2

   Given below are two statements : Statement (I) : The boiling points of alcohols and phenols increase with increase in the number of C -atoms. Statement (II) : The boiling points of alcohols and phenols are higher in comparison to other class of compounds such as ethers, haloalkanes. In the light of the above statements, choose the correct answer from the options given below :

   1. A.Statement I is false but Statement II is true
   2. B.Both Statement I and Statement II are true
   3. C.Statement I is true but Statement II is false
   4. D.Both Statement I and Statement II are false
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   Answer: B