Incorrect match is :

CHEMISTRY · Single correct · CBSE · Chemistry · Metals and Non-metals · Metals and Non-metals

Problem

Incorrect match is : (1) Purification of Al metal : Baeyer's method (2) Polling : Reduction of

\text{Cu}_2\text{O}

(3)

\text{FeCr}_2\text{O}_4

(chromite ore) :

\text{NaOH}/\text{Na}_2\text{CO}_3

(4) Ag : Mac Arthur cyanide process