NCERT Solutions For Class 8 Science Chapter 11 Chemical Effects Of Electric Current MCQs

NCERT Solutions For Class 8 Science Chapter 11 Chemical Effects Of Electric Current Multiple Choice Questions

Question 1. An electric current can produce

1. Heating Effect
2. Chemical Effect
3. Magnetic Effect
4. Chemical, Heating, And Magnetic Effects

Answer: 4. Chemical, Heating, And Magnetic Effects

Question 2. When an electric current is passed through a conductor solution, there is a change in colour of the solution. This indicates

1. The Chemical Effect of Current
2. The Heating Effect Of Current
3. The Magnetic Effect Of Current
4. The Lightning Effect Of Current

Answer: 1. The Chemical Effect of Current

NCERT Class 8 Science Chapter 11 Chemical Effects of Electric Current MCQs

Question 3. Tia used four different objects to fill the gap in an electric circuit, separately. The table shows what she found.

1. Which of these best conducts electricity?

1. Wood
2. Plastic
3. Copper
4. Graphic

Answer: 3. Copper

NCERT Solutions for Chemical Effects of Electric Current Chapter 11

2. Which of these is a chemical effect of electric current?

1. Glowing of the bulb
2. Heating of water
3. Ringing of a mobile phone
4. Chromium plating on iron.

Answer: 4. Chromium plating on iron

3. Which of these is a correct pair of an insulator and a conductor?

Answer: D

Question 4. Which of the following metals is used in electroplating to 5 make an object shinier and attractive?

1. Graphite
2. Zinc
3. Chromium
4. Iron

Answer: 2. Zinc

Chemical Effects of Electric Current MCQs Class 8 NCERT Solutions

Question 5. The object to be electroplated is taken as

1. Cathode
2. Anode
3. Both Can Be Taken
4. None Of These

Answer: 2. 1. Cathode

Question 6. Water can be dissociated into its components by the process of

1. Electroplating
2. Electrolysis
3. Evaporation
4. All Of These

Answer: 2. Electrolysis