1.

Assertion : When 3 to 10% sulphur is added rubber becomes soft and stretchy. Reason : Physical properties of rubber are not altered by the amount of sulphur added.

Answer»

(A) and (R) are TRUE and (R) is the correct explanation of (A)
Both (A) and (R) are true but (R) does not explain (A)
(A) is true but (R) is FALSE
Both (A) and (R) are false

Answer :D


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