JEE Main 2015 · 10 Apr · Shift 1 · Chemistry Q42

ChemistrySingle correct+4 / -1Question 42 of 90

In the isolation of metals, calcination process usually results in :

metal carbonate

metal oxide

metal sulphide

metal hydroxide

Answer and worked solution

Official answer: B

Calcination (heating in limited air) decomposes carbonates and hydroxides to the metal oxide.

JEE Main 2015 · 10 Apr · Shift 1, Chemistry question 42