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Anaesthetics

Which of the ...

Question

Which of the following statements are true regarding characteristics of Teflon?
P: It is non-sticky in nature.
Q: It is heat resistant.
R: It is a good conductor of electricity.

A

Only P

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B

P, Q and R

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C

P and Q

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D

Only R

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Solution

The correct option is C P and Q

Teflon is a polymer of tetrafluoroethylene. Its chemical name is poly-tetrafluoroethylene ${(C}_{2} F_{4})_{n}$ . It is used for coating cooking utensils and industrial equipment to avoid sticking. So, teflon is non-sticky.

Its melting point is 327 $^{o}$ C. Hence it is heat resistant.

It does not conduct electricity, so it is a poor conductor of electricity.

Only P and Q are true.

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Q. Ropes made of bakelite are used in cranes and elevators.
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S. Plastic is non-biodegradable, hence it is not environment friendly.

Q. Mark the given statements as true or false.
1. Teflon is a plastic on which oil and water do not stick.
2. Plastics are generally good conductors of electricity.
3. Plastic is non-biodegradable, hence non environment friendly.
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Q. Which of the following statement is true for graphite?

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(b) Graphite is very hard.
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