An ore on heating in air forms sulphur dioxide. Name the process that can be used for the concentration of this ore. Explain the principle of this process.

Important Questions on Metals and Non - Metals

MEDIUM

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 23

Distinguish between alloy and amalgam.

MEDIUM

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 23

Distinguish between minerals and ores.

MEDIUM

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 23

Distinguish between roasting and calcination.

MEDIUM

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 24

A yellow malleable alloy is made up of two metals A and B. On treatment with dilute sulphuric acid, A dissolves from the surface of the alloy to form a colourless solution. B remains undissolved and is found to have a reddish brown colour. Identify metals A and B. Explain the reactions involved.

MEDIUM

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 25

Which of the following metals is extracted only by electrolysis?

MEDIUM

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 26

Which oxide of a metal gets reduced only by coke and not by