Q19 of 32 Page 19

Why are bells made of metals?

Bells are made of metals as metals have sonorous property. The ringing sound produced by metals is known as sonorous.So, this is the reason why bells are made up of metals.


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17

A purple coloured non-metal forms a brown solution in alchohol which is applied on wounds as an antiseptic. Name the non-metal.

 18

Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turning in it?

 20

Which liquid metal is used for making thermometers?

 21

Which of the following metals can displace the other two metals from their salt solutions?

Zinc, Iron, Copper