EASY
10th CBSE
IMPORTANT
Earn 100

Why is it that aluminium, which is more reactive than iron does not corrode like iron?

Important Questions on Metals And Non-Metals

EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 5
How is the corrosion of iron prevented by coating it with a layer of oil?
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 6
State reasons for the following: Metal are good conductors of heat.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 6
State reasons for the following:
Addition of some silver to pure gold for making ornaments.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 6
State reasons for the following:
Inability of a non-metal in displacing hydrogen from dilute sulphuric acid.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 7
What is an alloy? Name the constituents of 22-carat gold. Why is 24-carat gold converted to 22-carat gold?
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?