Question

Write the correct answers.

1. Which of the following is an insulator?

(a) Human body

(b) Graphite

(c) Pure water

(d) Copper

2.In electroplating, the object to be electroplated is made:

(a) anode

(b) cathode

(c) none

(d) both

3.The extraction of metals from their ores by electrolysis is called!

(a) electroplating

(b) electrometallurgy

(c) electro refining

(d) none

4.The refining or purification of metals by passing electric current is

called:

(a) electroplating

(b) electrolysis

(c) electro refining

(d) none

5.Carbon rods, used as electrodes are made up of:

(a) graphite

(b) wood

(b) iron

(d) diamond​

Answer 1

Answer:

(1) copper

(2) none

(3) none

(4)electro refining

(5) graphite