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JEE Main 2021 · ChemistryNumerical answerNumerical valueHardRecall

JEE Main 31 August 2021, Shift 1, Chemistry Q60

Question 60 of 90 in this shift, Chemistry question 30 of 30, Section B.

Consider the sulphides HgS, PbS, CuS,

\mathrm{Sb_2S_3}

,

\mathrm{As_2S_3}

and CdS. Number of these sulphides soluble in 50%

\mathrm{HNO_3}

is __________.

Official answer

4

NTA final key.

Chapter: Equilibrium
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.