Question

Objective Type
A. Multiple choice questions.
1. Liquid through which electric current gets conducted is
(a) Kerosene
(b) Pure water
(c) Vegetable oil
(d) Salt water
2. Which of the following is a strong electrolytic solution?
(a) Rain water
(b) Copper sulphate (c) Vinegar
(d) Lemon juice
3. In which electrolysis process gases are produced along the electrodes?
(a) Electroplating
(b) Change in colour of the solution
(C) Purification of metal
(d) Electrolyzing saline water
4. Magnetic compass or LED is used to test the flow of current in the circuit while current is being
passed through the solution of
(b) Sulphuric acid (c) Carbonic acid
(d) Sodium hydroxide
5. When electric current is passed through a conducting solution the electrodes get covered with gas
bubbles. This indicates the
(a) Light effect of current
(b) Heating effect of current,
(©) Magnetic effect of current
(d) Chemical effect of current
6. The bulb in the tester does not glow on passing the electric current through a solution of
(a) Sodium chloride (b) Sodium hydroxide (c) Sugar
(d) Copper sulphate
(a) Salt

Answer 1

Answer:

1.d) Salt water

2.b)Copper Sulphate.

3.d)Electrolyzing saline water

4.d)Sodium hydroxide

5.c) megnatic effect of current

6.c)sugar

Answer 2

Answer:

1. d.salt water

2. b.copper sulphate

3. b.change in colour of solution

4. d. sodium hydroxide

5. c. magnetic effect of current

6. d. copper sulphate

Explanation:

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