MEDIUM
8th CBSE
IMPORTANT
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is the non-metal which is a good conductor of electricity.

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Important Questions on Materials: Metals and Non-Metals

MEDIUM
8th CBSE
IMPORTANT

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The portion of grey nail which is inside the blue solution of copper sulphate becomes _____.

MEDIUM
8th CBSE
IMPORTANT

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The change in colour of the dipped portion of the iron nail in copper sulphate solution is because of the deposition of _____.

MEDIUM
8th CBSE
IMPORTANT

The portion of grey nail which is inside the blue solution of copper sulphate becomes reddish brown.

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The activity shows ______.

MEDIUM
8th CBSE
IMPORTANT
What happens when a copper vessel is exposed to moist air for a long time?
MEDIUM
8th CBSE
IMPORTANT
What is meant by 'rusting of iron'? 
MEDIUM
8th CBSE
IMPORTANT
What is formed when non-metals react with oxygen?
MEDIUM
8th CBSE
IMPORTANT

What happens when the following metals react with dilute hydrochloric acid?

(a) magnesium

MEDIUM
8th CBSE
IMPORTANT

What happens when the following metals react with dilute hydrochloric acid?

(b) Aluminium