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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 24 February 2021, Shift 1, Chemistry Q34

Question 34 of 90 in this shift, Chemistry question 4 of 30, Section A.

Which of the following ore is concentrated using group 1 cyanide salt ?
  1. (1)Calamine
  2. (2)Malachite
  3. (3)Siderite
  4. (4)SphaleriteOfficial answer

Official answer

Option 4

NTA final key.

Chapter
General Principles and Processes of Isolation of Elements
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 108 of the 174 JEE Main shifts held from 2017 to 2026.