Q2 of 53 Page 49

Which metal has highest melting point?

Among all the metals in their pure form, Tungsten has the highest melting point which is around 3422° C and this is the reason why it is used in the making of incandescent bulb filaments.


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1

What are metalloids?

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Some metals melt on keeping them on palm. Why? Also give an example.

 4

To avoid accidental fires, some metals are kept immersed in kerosene oil. Why?

 5

An element X is soft and can be cut with a knife easily. This is very reactive with air and cannot be kept open with air. It reacts vigorously with water. Name the element X.