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Materials : Metals And Non-Metals

Question

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Give reasons for the following :

Immersion rods are made up of metallic substances.

Solution

Immersion rods are made up of metallic substances because metals are good conductors of heat and electricity. They get hot very soon and allow to passage of current and warm water.

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

Phosphorus is very ________ non-metal.

Metals are _ conductor of heat and __.

Iron is ________ reactive than copper.

Metals react with acids to produce ________ gas.

Generally, non-metals react with acids.

Sodium is a very reactive metal.

Copper displaces zinc from zinc sulphate solution.

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.

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