7th Class Science Sample Paper Science Olympiad Model Test Paper-6

  • question_answer
    Which one of the following is correct for the reaction between lime water and carbon dioxide?

    A) \[Ca{{(OH)}_{2}}+C{{O}_{2}}\to CaHC{{O}_{3}}+{{O}_{2}}\]

    B) \[Ca{{(OH)}_{2}}+C{{O}_{2}}\to CaC{{O}_{3}}+{{H}_{2}}O\]

    C) \[CaC{{O}_{3}}+C{{O}_{2}}\to Ca{{(OH)}_{2}}+{{H}_{2}}O\]

    D) \[CaC{{O}_{3}}+C{{O}_{2}}\to Ca{{(OH)}_{2}}+{{O}_{2}}\]

    E) None of these

    Correct Answer: B


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