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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceAssertion–reasonEasyConceptual

JEE Main 8 April 2023, Shift 1, Chemistry Q75

Question 75 of 90 in this shift, Chemistry question 15 of 30, Section A.

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Butan −1−-1- ol has higher boiling point than ethoxyethane. Reason R: Extensive hydrogen bonding leads to stronger association of molecules. In the light of the above statements, choose the correct answer from the options given below:
  1. (1)Both A and R are true and R is the correct explanation of AOfficial answer
  2. (2)Both A and R are true but R is not the correct explanation of A
  3. (3)A is true but R is false
  4. (4)A is false but R is true

Official answer

Option 1

NTA final key.

Chapter
Alcohols, Phenols and Ethers
Topic
Alcohols and Phenols
Idea tested
Hydrogen Bonding Trends in Alcohols

Same idea in other shifts

Asked 5× in all
  1. 5 Apr 2024, Shift 1 · Q75For the Compounds : (A) H3C−CH2−O−CH2−CH2−CH3\mathrm{H_3C-CH_2-O-CH_2-CH_2-CH_3} (B) H3C−CH2−CH2−CH2−CH3\mathrm{H_3C-CH_2-CH_2-CH_2-CH_3} (C)…EasyOther
  2. 1 Feb 2024, Shift 2 · Q63Select the compound from the following that will show intramolecular hydrogen bonding.EasySingle correctHas a figure
  3. 1 Feb 2024, Shift 2 · Q79Which among the followng has highest boiling point ?EasySingle correct
  4. 8 Jan 2020, Shift 2 · Q44Among the compounds A and B with molecular formula C9H18O3\mathrm{C_9H_{18}O_3}, A is having higher boiling point the B. The possible…EasyDiagram basedHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.