SUPER

Science

10th

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CBSE Class 10 Science Sample Paper 01 (2020-2021)

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38 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

     Translate the following statements into chemical equations and then balance them.

      Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

    2K + 2H2O → 2KOH + H2

    3BaCl2 + Al2(SO4)3 → 2AlCl3 + 3BaSO4

    2H2S + 3O2 → 2H2O + 2SO2

    3H2 + N2 → 2NH3

  • 2. Multiple Choice
    30 seconds
    1 pt

     Translate the following statements into chemical equations and then balance them.

      Hydrogen sulphide gas burns in air to give water and sulphur dioxide

    2K + 2H2O → 2KOH + H2

    3BaCl2 + Al2(SO4)3 → 2AlCl3 + 3BaSO4

    2H2S + 3O2 → 2H2O + 2SO2

    3H2 + N2 → 2NH3

  • 3. Multiple Choice
    30 seconds
    1 pt

     Translate the following statements into chemical equations and then balance them.

      Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

    2K + 2H2O → 2KOH + H2

    3BaCl2 + Al2(SO4)3 → 2AlCl3 + 3BaSO4

    2H2S + 3O2 → 2H2O + 2SO2

    3H2 + N2 → 2NH3

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