Question

Identify the correct statement(s).
(I) the wires that carry current in our homes have a coating of PVC or a rubber like material
(II) School bells are made up of metals
(III) Metals do not conduct electricity
(IV) Metals which produce a sound on striking a hard surface are said to be non-sonorous
(a) (I) and (III)
(b) (I) and (II)
(c) (III) and (IV)
(d) Only (II)

Answer 1

Answer:

no. b

Explanation:

yes wires carrying current in our home have coating of pvc.

and school Bell is made up of metals

hope this helps.

Answer 2

(b) (I) and (II) are the correct statements.

1. PVC stands for Polyvinyl chloride. PVC and rubber, both the materials are insulators. Their coating on wire is done to provide protection to humans from electric shock.
2. School bells are made of metals, which have the property of being sonorous, i.e. ability to produce sound on being hit by hard object.
3. Further, they are good conductors of electricity.