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Short answer type questions:
(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:
Ron wants to place a battery inside a torch. How does he place the battery inside the torch?
What is conventional current?
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?
What is an electrolyte?
What is electrolysis?
Why metallic elements are good conduction of electricity?
What is electrical conductivity?
Long answer type questions:
Explain the of electrolysis in water experiment. Draw a well-labelled diagram also.
Explain electroplating in details.
Class 8 Maths
Class 8 Science