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Question

S.No. Materials Good Conductor / Poor Conductor 1. Iron rod/nail Sulphur 3. Coal piece 4. Copper wire 2.

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Similar Questions
Q1

TELL WHICH IS A GOOD CONDUCTOR AND WHICH IS A BAD GONDUCTOR.

1-IRON NAIL

2-SULPHUR

3-COAL PIECE

4-COPPER WIRE

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Q2
Why it is preferable to classify materials into good or poor conductors instead of classifying into conductors or insulators?
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Q3
Silver is a poor conductor of electricity while mercury is a very good conductor.

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Q4

7. Iron, steel, copper, aluminium are conductors of heat but wood, rubber, plastic, and cotton piece are non-conductors. Explain


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Q5
Question 3
Boojho has learnt that non-metals on beating with a hammer are generally broken into pieces. Which of the following is a non-metal?

(a) iron nail
(b) aluminium wire
(c) copper plate
(d) piece of coal
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