Question

1. Give reasons for the following:
(a) The electric wires are made of copper.
(b) Gold and silver are used for making jewellery.
(c) Graphite is used for making electrodes in electric cells.
2. Which non-metal is used as the disinfectant to purify and clean water​

Answer 1

Answer:

I know this is a very very easy question

Answer 2

Answer:

I . Copper electrical wires are safer to use than wires made of most other conductive metals because they are resistant to heat. As you can see, copper is the preferred metal for electrical wires for several reasons. It has high electrical conductive; it's inexpensive; it's ductile; and it's thermal resistant.

2 . Platinum, gold and silver are used to make jewellery because the metals used in jewellery are always be chosen on the basis of its reactivity. ... They are highly lustrous metals which are resistant to corrosion. They are highly malleable and ductile so can be transformed into any shape or design

3. Graphite is used in making electrodes because it is a good conductor of electricity due to the presence of free electrons. One valence electron of each carbon atom remains free and thus it is a good conductor of electricity.

Q2. Chlorine

Chlorine is a non-metal which is used to disinfect water.