Question

Extra questiions th chemical effects of electric current

Answer 1

Multiple Choice Questions

An electric current can produce

(a) heating effect only.

(b) chemical effect only.

(c) magnetic effect only.

(d) chemical, heating, and magnetic effects.

When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates

(a) the chemical effect of current.

(b) the heating effect of current.

(c) the magnetic effect of current.

(d) the lightning effect of current.

Which one of the following solutions will not conduct electricity?

(a) lemon juice

(b) vinegar

(c) tap water

(d) vegetable oil

Which of the following metals is used in electroplating to make objects appear shining?

(a) iron

(b) copper

(c) chromium

(d) aluminium