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Saturday, 31 October

JEE Main 2020 · ChemistryMultiple choiceSingle correctMediumApplication

JEE Main 2 September 2020, Shift 2, Chemistry Q35

Question 35 of 75 in this shift, Chemistry question 10 of 25.

Two elements A and B have similar chemical properties. They don’t form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are :
  1. (1)Na and Rb
  2. (2)Na and Ca
  3. (3)Li and MgOfficial answer
  4. (4)Cs and Ba

Official answer

Option 3

NTA final key (Sep 2020).

Chapter
The s-Block Elements
Topic
s-Block Elements
Idea tested
Direct Formation of Nitrides

Same idea in other shifts

Asked 2× in all
  1. 8 Jan 2020, Shift 2 · Q35A metal (A) on heating in nitrogen gas gives compound B. B on treatment with H2O\mathrm{H_2O} gives a colourless gas which when passed…MediumSingle correct

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.