EASY
10th CBSE
IMPORTANT
Earn 100

What is an alloy? Name the constituents of 22-carat gold. Why is 24-carat gold converted to 22-carat gold?

Important Questions on Metals And Non-Metals

EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 8
Explain the following terms by giving one example of each:
(i) Mineral, (ii) Ore, (iii) Gangue
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 8
Explain the following terms by giving one example of each:
Explain the term, 'roasting' as used in metallurgical processes. Give one suitable example for it.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 8
What changes take place when cinnabar (HgS) is heated in air for a long time?
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 9
(a)Name an important ore of iron. Write its formula.
(b) How is this ore concentrated?
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 10
Name the chief ore of iron. Write its formula.
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 10
How is iron ore concentrated? Describe it briefly
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 11
Why is it necessary to concentrate an ore before processing? Draw a labelled diagram of Froth Floatation Process' for concentrating an ore. State the principle of this process.
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 12
Describe with labelled diagram, the Froth Floatation Process used to separate the gangue from a sulphide ore.