PDF chapter test TRY NOW
Answer the following questions:
1. ‘Manufacturing synthetic fibres is actually helping conservation of forests’. Comment.
Manufacturing synthetic fibres are helping the conservation of forests. fibres are artificial fibres, and they are manufactured from . If we use synthetic fibres, we do not require to cut down and hence help in the conservation of forest.
2. Describe an activity to show that thermoplastic is a poor conductor of electricity.
Let us take a and bulb and form a circuit. When the switch is on then, the bulb glows, showing the passage of , but when a piece of thermoplastic is joined in the circuit, the bulb does not glow. This shows that thermoplastic is a .
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