JEE Main 2022 · ChemistryMultiple choiceTwo statementsMediumConceptual

JEE Main 27 June 2022, Shift 2, Chemistry Q63

Question 63 of 90 in this shift, Chemistry question 3 of 30, Section A.

**Statement I:** Leaching of gold with cyanide ion in absence of air /

\mathrm{O_2}

leads to cyano complex of Au(III). **Statement II:** Zinc is oxidized during the displacement reaction carried out for gold extraction. In the light of the above statements, choose the **correct** answer from the options given below.

(1)Both statement I and statement II are correct.
(2)Both statement I and statement II are incorrect.
(3)Statement I is correct but statement II is incorrect.
(4)Statement I is incorrect but statement II is correct.Official answer

Official answer

Option 4

NTA final key.

Chapter: General Principles and Processes of Isolation of Elements
Topic: Metallurgical Extraction
Idea tested: MacArthur-Forrest Cyanide Process

Same idea in other shifts

Asked 6× in all

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.