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Question

Metal sheet of a car is coated with a certain substance 'A' to protect the damage due to rain and temperature. Identify the substance 'A' and one of its characteristic property 'P'.

A
A: Sodium
P: Hard
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B
A: Teflon
P: Non-stick
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C
A: Ceramics
B: Water resistant
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D
A: Porcelain
P: Transparent
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Solution

The correct option is B A: Teflon
P: Non-stick
Teflon (C2F4)n is the polymer of tetrafluoroethylene. The atmospheric conditions generally have no effect on it. It neither sticks to oil nor to water. Also, it is a bad conductor of heat. So it is used to coat metal sheets of vehicles to prevent them from damage due to rain and temperature. Teflon coated articles are easy to clean.

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