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Plastic

Which of the ...

Question

Which of the following plastics is used for making electric switches ?

(a) teflon (b) melamine (c) PET (d) bakelite

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Solution

(d) bakelite

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Q. Analyse the following statements and choose the correct option.

(i) Melamine is a plastic commonly used in kitchenware
(ii) Melamine is a cross-linked polymer just like bakelite
(iii) The effect of heat on melamine is the same as that on PET plastic
(iv) Melamine and Bakelite are good conductors of heat and electricity

The plastic which is coated on the uniforms of fireman to make them fire -resistant is :

(a) bakelite (b) polythene (c) teflon (d) melamine

The non-stick coating on frying pans is that of a plastic called :

(a) polyvinyl chloride (b) melamine (c) bakelite (d) teflon

Q. Match the terms of column A correctly with the phrases given in column B.

Column-A	Column-B
(i) Polyester	(a) Prepared by using wood pulp
(ii) Teflon	(b) Used for making parachutes and stockings
(iii) Rayon	(c) Electrical switches
(iv) Nylon	(d) Fabrics do not wrinkle easily
(v) Bakelite	(e) Fire resistant clothes
(vi) Melamine	(f) Used to make non-stick cookwares

Q. Study the given flowchart carefully.

K, L, P a n d Q

K L P Q

Choose your answer from A, B, C and D and enter accordingly.

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