8th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Some terms are missing in the table given below. Choose the correct option to complete the table.
    Chemical properties of Metals
    Metal Reaction with water Reaction with dilute HCL
    \[\underline{\,\,\,\,P\,\,\,\,}\] Reacts violently Reacts violently
    Mg Reacts with \[\underline{\,\,\,\,Q\,\,\,\,}\]and \[\underline{\,\,\,\,R\,\,\,\,}\] Reacts to give salt and \[{{H}_{2}}\]
    \[\underline{\,\,\,\,S\,\,\,\,}\] Reacts only with steam Reacts to give salt and \[\underline{\,\,\,\,T\,\,\,\,}\]
    \[\underline{\,\,\,\,U\,\,\,\,}\] Does not reacts Does not reacts

    A) P- sodium, Q-hot water, R- steam, S-copper, T- water, U- gold

    B) P- potassium, Q- hot water, R- steam, S- zinc, T- hydrogen, U- gold

    C) P- potassium, Q- cold water, R- steam, S- zinc, T- water, U- silver

    D) P- aluminum, Q- hot water, R- steam, S- copper, T-hydrogen, U- gold

    E) None of these

    Correct Answer: B


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