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7th Class Science Fibre to Fabric Question Bank Fiber to Fabric

  • question_answer
    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): Workers in silk industry need to dip their hands frequently in boiling water. Reason (R): Silk workers often suffer from asthma and respiratory diseases.

    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 :

    Dipping hands in boiling water causes burning of skin, blisters and open injuries. Asthma and respiratory diseases are caused by inhalation of vapours from boiling cocoon; and poorly ventilated unit.


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