Question

give reasons
(c) Graphite is used as electrodes in the dry cells.
(d) Metals are able to produce a ringing sound when struck with a hard object.
(e) Metals are good conductors of heat and electricity.​

Answer 1

Answer:

c) Graphite is used as electrodes in the dry cells because it is a good conductor of electricity.

d)Metals are able to produce a ringing sound when struck with a hard object because the waves travel to and fro in the metal with high frequencies and collide with almost same amplitude and frequency causing the metal to resonate and thus producing a high pitched ringing sound when we hit a metal with a hard object.

I hope it's helpful!:)