NCERT Solutions For Class 8 Science Chapter 11 Chemical Effects Of Electric Current Multiple Choice Questions
Question 1. An electric current can produce
- Heating Effect
- Chemical Effect
- Magnetic Effect
- 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
- The Chemical Effect of Current
- The Heating Effect Of Current
- The Magnetic Effect Of Current
- 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?
- Wood
- Plastic
- Copper
- 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?
- Glowing of the bulb
- Heating of water
- Ringing of a mobile phone
- 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?
- Graphite
- Zinc
- Chromium
- Iron
Answer: 2. Zinc
Chemical Effects of Electric Current MCQs Class 8 NCERT Solutions
Question 5. The object to be electroplated is taken as
- Cathode
- Anode
- Both Can Be Taken
- None Of These
Answer: 2. 1. Cathode
Question 6. Water can be dissociated into its components by the process of
- Electroplating
- Electrolysis
- Evaporation
- All Of These
Answer: 2. Electrolysis