Chemical Effects of Electric Current (Practice Solution, Class 8)

(1) Write differences between good conductor and poor conductor.

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(2) Is honey good conductor of electricity?

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(3) Radha is performing a test on three solutions of lemon juice, distilled water and milk. In two solution bulb glow but in one solution bulb does not glow. Can you identify the solutions?

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(4)Fill in the blanks-

(i) Caustic soda is _____ conductor of electricity.

(ii) ____ Bulb can glow in weak current.

(iii) Needle of tester of magnetic effects of current deflates, if material is ______ conductor of electricity.

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(5) Identify the positive terminal in given figure below:-

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(6) What is electroplating? Write its use in daily life.

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(7) Raju is trying to glow a bulb. He is using circuit which is given below:-

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Can you find his mistake?

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(8) What will you do if bulb will glow dim in a good conductor solution?

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(9) What is electrode?

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(10) Which type of solutions conduct electricity?

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Helping Topics

Electric cuurent and its effects

NCERT solutions, class 8

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