Chemical Effects of Electric Current - Exemplar Solutions 2
CSBE Class 8 Science
NCERT Exemplar Solutions
CHAPTER – 14
Chemical Effects of Electric Current
NCERT Exemplar Solutions
CHAPTER – 14
Chemical Effects of Electric Current
VERY SHORT ANSWER QUESTIONS
8. Fill in the following blanks:-
(a) The object to be electroplated is taken as _______ electrode.
(b) One of the most common applications of chemical effect of electric current is _______.
(c) Small amount of a mineral salt present naturally in water makes it a ______ of electricity.
(d) Electroplating of ______ is done on objects like water taps and cycle bell to give them a shiny appearance.
(b) One of the most common applications of chemical effect of electric current is _______.
(c) Small amount of a mineral salt present naturally in water makes it a ______ of electricity.
(d) Electroplating of ______ is done on objects like water taps and cycle bell to give them a shiny appearance.
Ans: (a) Cathode
(b) Electroplating
(c) Conductor
(d) Chromium
(b) Electroplating
(c) Conductor
(d) Chromium
9. Why is a layer of zinc coated over iron?
Ans: A layer of zinc is coated over iron to protect iron from rusting and corrosion. This process is known as galvanization.
10. Will the solution of sugar in distilled water conduct electricity?
Ans: No, the solution of sugar in distilled water will not conduct any electricity.
11. Name the effect of current responsible for the glow of bulb in an electric circuit.
Ans: Heating effect of electric current is responsible for the glow of bulb in an electric circuit.
