With one example, explain roasting.

Important Questions on General Principles and Processes of Isolation of Elements

EASY

12th Odisha Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>Odisha Board-2019>Q 3

Which one is the ore of copper?

MEDIUM

12th Odisha Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - General Principles and Processes of Isolation of Elements>Odisha Board-2019>Q 4

Discuss Van-Arkel Boer method for ultrapurification of Zirconium.