MEDIUM
10th CBSE
IMPORTANT
Earn 100

Give reason for following: Gold and silver often occur in native state.

Important Questions on Metals and Non-Metals

MEDIUM
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 1
Give reason for following: Blue colour of copper sulphate solution is destroyed when iron fillings are added to it.
MEDIUM
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 1
Give reason for the following:
Sodium metal is stored under kerosene oil.
EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 1
Give reason for following: Silver does not displace hydrogen from dilute acid.
EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 2
Write short note on calcination.
EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 2
Write short note on thermite process.
EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 2
Write short note on froth floatation process.
HARD
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 3

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.

MEDIUM
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 4
Distinguish between alloy and amalgam.