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Friday, 9 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 16 March 2021, Shift 2, Chemistry Q48

Question 48 of 90 in this shift, Chemistry question 18 of 30, Section A.

Ammonolysis of Alkyl halides followed by the treatment with NaOH solution can be used to prepare primary, secondary and tertiary amines. The purpose of NaOH in the reaction is :
  1. (1)to remove basic impurities
  2. (2)to activate NH3\mathrm{NH_3} used in the reaction
  3. (3)to increase the reactivity of alkyl halide
  4. (4)to remove acidic impuritiesOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Amines
Topic
Amines
Idea tested
Ammonolysis of Alkyl Halides

Same idea in other shifts

Asked 2× in all
  1. 6 Apr 2024, Shift 2 · Q90An amine (X) is prepared by ammonolysis of benzyl chloride. On adding p-toluenesulphonyl chloride to it the solution remains clear. Molar…MediumNumerical value

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.