Question

A. Multiple choice questions.

1. Liquid through which electric current gets conducted is

(d) Salt water
(a) Kerosene
(b) Pure water
d vegetable oil

2. Which of the following is a strong electrolytic solution?

(d) Lemon juice
(a) Rain water
(b) Copper sulphate
(c) Vinegar

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
passed through the solution of

(a) Salt
(b) Sulphuric acid
(c) Carbonic acid
d sodium hydroxide

5. When electric current is passed through a conducting solution the electrodes get covered with
bubbles. This indicates the

(a) Light effect of current
(b) Heating effect of current,
(c) 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
(​

Answer 1

A. Multiple choice questions.

1. Liquid through which electric current gets conducted is

(d) Salt water

(a) Kerosene

(b) Pure water $\huge{\bf\green{✓}}$

d vegetable oil

2. Which of the following is a strong electrolytic solution?

(d) Lemon juice $\huge{\bf\green{✓}}$

(a) Rain water

(b) Copper sulphate

(c) Vinegar

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 $\huge{\bf\green{✓}}$

4. Magnetic compass or LED is used to test the flow of current in the circuit while current is

passed through the solution of

(a) Salt

(b) Sulphuric acid

(c) Carbonic acid

d sodium hydroxide $\huge{\bf\green{✓}}$

5. When electric current is passed through a conducting solution the electrodes get covered with

bubbles. This indicates the

(a) Light effect of current

(b) Heating effect of current,

(c) Magnetic effect of current $\huge{\bf\green{✓}}$

(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 $\huge{\bf\green{✓}}$

(d) Copper sulphate

Answer 2

Answer:

1 pure water

2 lemon juice

3 electroplating

5 chemical effect of current

4 sodium hydroxide

6 sugar