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    Question

    The following Two (7 & 8) items consist of two statements, one labelled the 'Assertion (A) and the other labelled the 'Reason (R)'. You are to examine these two statements carefully and decide if the Assertion (A) and the Reason (R) are individually true and if so, whether the Reason (R) is a correct explanation of the Assertion (A). Select your answers to these items using the Codes given. below and mark your answer-sheet accordingly

    Assertion (A): Phenol is commonly used as a disinfectant.

    Reason (R): Phenol is not harmful to living human tissues even at a very high concentration.

    A Both A and R are true and R is the correct explanation of A Correct Answer Incorrect Answer
    B Both A and R are true but R is NOT the correct explanation of A Correct Answer Incorrect Answer
    C A is true but R is false Correct Answer Incorrect Answer
    D A is false but R is true Correct Answer Incorrect Answer

    Solution

    Phenol is an antiseptic and disinfectant used in a variety of settings. • Phenol is an antiseptic and disinfectant. It is active against a wide range of micro-organisms including some fungi and viruses but is only slowly effective against spores. Phenol has been used to disinfect skin and to relieve itching. Hence Assertion is true. • Exposure to phenol may cause irritation to the skin, eyes, nose, throat, and nervous system. • Some symptoms of exposure to phenol are weight loss, weakness, exhaustion, muscle aches, and pain. Severe exposure can cause liver and/or kidney damage, skin burns, tremor, convulsions, and twitching. Hence Reason is false.

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