EASY
10th CBSE
IMPORTANT
Earn 100

Out of silver and copper metals, which is more reactive and why?

Important Questions on Metals and Non-Metals

MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 16
Explain why the surfaces of some metals become dull when exposed to air for sometime.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 17
Why are metals called electropositive elements while non-metals electronegative elements?
EASY
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 18
What happens when a piece of sodium metal is dropped in water taken in a beaker?
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 19
A copper coin is kept immersed in solution of silver nitrate for sometime. What will happen to the colour of the solution? Write chemical equation.
EASY
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 20
Which allotropic form of carbon is used for making electrodes? Assign reason.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 21
Hydrogen gas is not evolved when most metals react with nitric acid. State reason to justify this statement.
EASY
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 22
Why are metals not generally found in their free state?
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 22
If a strip of aluminium with scratched surface is dipped in an aqueous solution of copper sulphate for little time, the surface of the strip becomes brownish. What is the reason for this? Write the balanced chemical equation for the reaction.