JEE Main 2020Chemistryp Block Elements (Group 15, 16, 17 & 18)MediumMCQ

JEE Main 2020 — p Block Elements (Group 15, 16, 17 & 18) Question with Solution

JEE Main 2020 (03 Sep Shift 1)

Question

Aqua regia is used for dissolving noble metals (Au, Pt, etc.). The gas evolved in this process is

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Show full solutionCorrect option: A
Correct answer
ANO

Step-by-step explanation

Aqua regia is HNO3 : HCl

1   :   3

HNO3+3HCl  →  2H2O+NO+3Cl

(i) Au+3Cl → AuCl3→HClHAuCl4

(ii) Pt+4Cl  → PtCl4 →HClH2PtCl6

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About this question

This is a previous-year question from JEE Main 2020, covering the p Block Elements (Group 15, 16, 17 & 18) chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.