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  3. 9th Class
  4. Social Science

9th Class Social Science Sample Paper Social Studies - Sample Test Paper-1

  • question_answer
    The continuous use of chemical fertilizers leads to degradation of soil health as has happened in case of Punjab today. Why it happens?

    A)  Chemical fertilizers escape from the soil and pollute groundwater, rivers and lakes

    B)  Chemical fertilizers kill useful bacteria in the soil

    C)  Chemical fertilizers kill micro-organisms in the soil

    D)  All of these

    E)  None of these

    Correct Answer: D

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