(a) State one use each of the following non-metals:
Hydrogen, Carbon (as Graphite), Nitrogen Sulphur
(b) Name the metal which is used in making thermometers.

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Solution

(a) Hydrogen is used as fuel in rockets.

Carbon (as graphite) is used to make electrodes of electrolytic cells and dry cells.

Nitrogen, due to its inertness, is used to preserve food material.

Sulphur is used as a fungicide.

(b) Liquid mercury is used in thermometers.

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