MEDIUM
10th CBSE
IMPORTANT
Earn 100

Name with examples three common compounds in which metals occur in nature. Write chemical equations for the metals reacting with a dilute acid to produce hydrogen gas.

Important Questions on Metals And Non-Metals

EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 5
Explain what corrosion of iron means.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 5
Why is it that aluminium, which is more reactive than iron does not corrode like iron?
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