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Materials : Metals And Non-Metals

Question

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Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
How will she find the nature of the gas?

Solution

She will test it with litmus paper to check the acidic or basic nature of gas. If red litmus turns blue, it is basic in nature. If blue litmus turns red, it is acidic in nature. if colour is not change in both case then it is neutral.

Some More Questions From Materials : Metals And Non-Metals Chapter

Carbon can be drawn into wires.

Some properties are listed in the following table. Distinguish between metals and non-metals on the basis of their properties.

Properties

Metals

Non-metals

1. Appearance

2. Hardness

3. Malleability

4. Ductility

5. Heat Conduction

6. Conduction of Electricity

Give reasons for the following :

Aluminium foils are used to wrap food items.

Give reasons for the following :

Immersion rods are made up of metallic substances.

Give reasons for the following :

Copper cannot displace zinc from its salt solution.

Give reasons for the following :

Sodium and Potassium are stored in kerosene?

Can you store acidic lemon pickles in an aluminium utensils? Explain.

Match the following option:

What happens when :

Dilute sulphuric acid is poured on a copper plate?

What happens when :

Iron nails are placed in copper sulphate solution?

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