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Chemistry Test ...

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  • Question 1
    1 / -0

    Oxidation states of the metal in the minerals haematite and magnetite, respectively, are

  • Question 2
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  • Question 3
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    The reaction

  • Question 4
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    The species which by definition has ZERO standard molar enthalpy of formation at 298 K is

  • Question 5
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    Extraction of metal from the ore cassiterite involves

  • Question 6
    1 / -0

    Based on VSEPR theory, the number of 90 degree F−Br−F angles in BrF5 is

  • Question 7
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    When a metal rod M is dipped into an aqueous colourless concentrated solution of compound N, the solution turns light blue. Addition of aqueous NaCl to the blue solution gives a white precipitate O. Addition of aqueous NH3 dissolves O and gives an intense blue solution. The compound N is

  • Question 8
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    A student performs a titration with different burettes and finds titre values of 25.2 mL, 25.25 mL and 25.0 mL. The number of significant figures in the average titre value is

  • Question 9
    1 / -0

    Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is

  • Question 10
    1 / -0

    Among the following compounds, the most acidic is

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