MEDIUM
10th CBSE
IMPORTANT
Earn 100

Write the balanced chemical equation for the chemical reaction between manganese dioxide and aluminium powder. What happens if manganese powder is heated with aluminium oxide?

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 10
Why do ionic compounds conduct electricity only in the molten state and not in the solid state ?
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 11
In one of the methods of rust prevention, iron is not coated with anything. Name the method and define it.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 12
The wires carrying current in homes have a coating of PVC. Why?
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 13
Aluminium oxide and zinc oxide react with both acids and bases to produce salt and water. What are these oxides called? Write chemical equation in each case.
EASY
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 14
Name the constituent elements of the alloys (i) Brass (ii) Bronze (iii) Solder. Mention one use of each alloy.
EASY
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 15
Out of silver and copper metals, which is more reactive and why?
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?