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Friday, 9 October

JEE Main 2020 · ChemistryMultiple choiceSingle correctEasyApplication

JEE Main 8 January 2020, Shift 1, Chemistry Q40

Question 40 of 75 in this shift, Chemistry question 15 of 25, Section A.

A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63 ∘^\circC while the other boils at 60 ∘^\circC. What is the best way to separate the two liquids and which one will be distilled out first ?
  1. (1)fractional distillation, isohexaneOfficial answer
  2. (2)fractional distillation, 3-methylpentane
  3. (3)simple distillation, isohexane
  4. (4)simple distillation, 3-methylpentane

Official answer

Option 1

NTA final key (Jan 2020).

Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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 42 of the 174 JEE Main shifts held from 2017 to 2026.