Chemical effect of electric current Extra Questions

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Short answer type questions:

Question 1
(i)What is a fire extinguisher? Write two types of fire extinguishers.
(ii)What is calorific value? Write its SI unit.
(iii)What are non-renewable fuels? Give two examples.
(iv)What are gaseous fuels? Give two examples.
(v)What is slow combustion? Give two examples.

Short answer type questions/HOTS:

Question 2
Ron wants to place a battery inside a torch. How does he place the battery inside the torch?

Question 3
What is conventional current?

Question 4
Ram tears the protective layer of the copper wire, which is made up of rubber, to connect it with the bulb. His son asked him a question that why do we cover the wires with the rubber?

Question 5
What is an electrolyte?

Question 6
(i)What is electrolysis?
(ii) In an open circuit, the switch is off. If Ola wants to switch on the light, she pressed the switch and the light is glowing now. How does the light glows?

Question 7
Why metallic elements are good conduction of electricity?

Question 8
What is electrical conductivity?

Long answer type questions:

Question 9
Explain the of electrolysis in water experiment. Draw a well-labelled diagram also.

Question 10
Explain electroplating in details.


This Chemical effect of electric current Extra Questions for Class 8 is prepared keeping in mind the latest syllabus of CBSE . This has been designed in a way to improve the academic performance of the students. If you find mistakes , please do provide the feedback on the mail.

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