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Friday, 9 October

NEET UG 2020 · Chemistry · Question 135

NEET 2020 Chemistry, question 135

Question 135 of the NEET 2020 paper (code E1) is a Chemistry question from Alcohols, Phenols and Ethers. Its idea, Cleavage of Ethers by HI, was asked 3 times, in 2017, 2020 and 2023, across NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q135 · Chemistry

Anisole on cleavage with HI gives :

The figure, described in words

Options drawn as benzene rings bearing OH or I plus the second product: (1) PhOH + CH3I, (2) PhI + CH3OH, (3) PhOH + C2H5I, (4) PhI + C2H5OH.

  1. 1[structure: C6H5OH\mathrm{C_6H_5OH}] + CH3I\mathrm{CH_3I}Official answer
  2. 2[structure: C6H5I\mathrm{C_6H_5I}] + CH3OH\mathrm{CH_3OH}
  3. 3[structure: C6H5OH\mathrm{C_6H_5OH}] + C2H5I\mathrm{C_2H_5I}
  4. 4[structure: C6H5I\mathrm{C_6H_5I}] + C2H5OH\mathrm{C_2H_5OH}

Official answer: option 1 · NTA final answer key

Same idea

Cleavage of Ethers by HI, in other papers

NEET asked this idea 3 times, in 2017, 2020 and 2023. The other 2 questions below.

  • 2023 Q87Consider the following reaction : C6H5−CH2−O−C6H5→ΔHIA+B\mathrm{C_6H_5-CH_2-O-C_6H_5 \xrightarrow[\Delta]{HI} A + B} (benzyl phenyl ether) Identify products A…One-line MCQ · Medium
  • 2017 Q83The heating of phenyl-methyl ethers with HI produces.One-line MCQ · Easy

Cleavage of Ethers by HI: every question and how it was framed

The chapter

Alcohols, Phenols and Ethers in ten years of NEET

15 questions from 2017–2026, asked in 7 of 10 papers, about 1.4 a paper. Alcohols and Phenols alone had 15.

Chapter analysisStudy this chapterPractise this chapter

Alcohols, Phenols and Ethers: questions per paper

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