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10th CBSE
IMPORTANT
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Generally, alloys are homogeneous mixture of a metal with a metal or non-metal. Which among the following alloys has a non-metal?

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Important Questions on Metals and Non-Metals

MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 3 - Metals and Non-Metals>Value Based Questions>Q 45
Generally, non-metals are non-conductors of electricity. The non-metal which is a good conductor of electricity, is:
HARD
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 3 - Metals and Non-Metals>Value Based Questions>Q 46
Silver ornaments become black on prolong exposure to air, it is due to the formation of:
HARD
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 3 - Metals and Non-Metals>Value Based Questions>Q 47
Galvanisation is a method of protecting iron from rusting by coating a layer of:
HARD
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 3 - Metals and Non-Metals>Value Based Questions>Q 48
Copper on exposure to air, gets a green coating due to formation of:
HARD
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 3 - Metals and Non-Metals>Value Based Questions>Q 49
In the formation of a compound, X loses electrons and Y gains electrons. Which of the following properties is not shown by the compound?
EASY
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 3 - Metals and Non-Metals>Value Based Questions>Q 50
Electrical wires have an insulating coating of:
HARD
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 3 - Metals and Non-Metals>Value Based Questions>Q 51
Aluminium powder was added to a solution of copper sulphate. The colour of the solution changed from:
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF CHEMISTRY X>Chapter 3 - Metals and Non-Metals>Value Based Questions>Q 52
A student puts some crystals of CuSO4 in water taken in a test tube. The colour of the solution obtained would be: