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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-18

  • question_answer
    Which of the following country is declared by WHO as polio free in 2017?

    A)  Afghanistan      

    B)         Nigeria

    C)  Pakistan          

    D)  Somalia

    Correct Answer: B

    Solution :

    The World Health Organisation (WHO) has officially declared Nigeria a "polio-free country" because of lack of new reported or suspected cases in the central African country. Polio is a highly-infectious viral disease which mainly affects young children and can result in permanent paralysis.


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