MEDIUM
10th CBSE
IMPORTANT
Earn 100

Explain the meaning of malleable and ductile.

Important Questions on Metals and Non-Metals

EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 13
Does every mineral have a definite and fixed composition? Explain. 
MEDIUM
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 14
Differentiate between roasting and calcination.
EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 15

Give reasons: Metal replace hydrogen from dilute acids whereas non-metals do not.

EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 15

Give reasons: Carbonate and sulphide ores are usually converted into oxides.

MEDIUM
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 16
  State two ways of preventing rusting.
EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 17
What is 24 carat gold? How would you convert it into 18 carat gold?
EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 18
Sodium amalgam is a mixture of sodium and _____. (copper/ mercury)
EASY
10th CBSE
IMPORTANT
MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 3 - Metals and Non-Metals>Revision Exercise>Q 18
The process of covering iron with _____ is called galvanization. (Zinc/ Copper)