6th Class Science Changes Around us Question Bank Changes Around us

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    DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Small gap is left between the rails of a railway track. Reason R: Cooling of substances result in contraction.

    A) Both A and R are true and R is the correct explanation of A.

    B) Both A and R are true but R is not the correct explanation of A.

    C) A is true but R is false.

    D) A is false but R is true.

    Correct Answer: B

    Solution :

        Small gap is left between the rails of a railway track because there is expansion of the rails in hot weather.


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