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Subject :NSO    Class : Class 4

Look at the given, figure carefully. What materials are used to make the parts labelled as R and S ?

Ch-7, Q22.eps

(A) R-Glass; S-Plastic

(B) R-Glass; S-Rubber

(C) R-Plastic; S-Rubber

(D) None of the above.

Ans 1:

Class : Class 5
b is the correct answer.

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