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Chemistry

10th

grade

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Chemical Reaction and Equation

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10 questions

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  • 1. Multiple Choice
    20 seconds
    1 pt

    When Lead Nitrate reacts with potassium iodide, Yellow precipitate of ............. is formed

    PbI2

    KNO3

    Pb(NO3)2

    PbIO3

  • 2. Multiple Choice
    20 seconds
    1 pt

    Which of the following is not a chemical reaction?

    Souring of milk

    Dissolution of sugar in water

    Rusting of iron

    Digestion of food in our body

  • 3. Multiple Choice
    20 seconds
    1 pt

    Which of the following is not a thermal decomposition reaction

    2FeSO4 →Fe2O3 +SO2 + SO3

    2H2O→2H2 + O2

    ZnCO3→ZnO + CO2

    2KClO3→2KCl + 3 O2

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