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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 29 July 2022, Shift 1, Chemistry Q66

Question 66 of 90 in this shift, Chemistry question 6 of 30, Section A.

The reaction of zinc with excess of aqueous alkali, evolves hydrogen gas and gives :
  1. (1)Zn(OH)2\mathrm{Zn(OH)_2}
  2. (2)ZnO
  3. (3)[Zn(OH)4]2−\mathrm{[Zn(OH)_4]^{2-}}
  4. (4)[ZnO2]2−\mathrm{[ZnO_2]^{2-}}Official answer

Official answer

Option 4

NTA final key.

Chapter
The d- and f-Block 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.