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Chemistry Test ...

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  • Question 1
    4 / -1

    One gram equimolecular mixture of Na2CO3 and NaHCO3 is reacted with 0.1 N HCI. The millilitres of 0.1 N HCI required to react completely with the above mixture are

  • Question 2
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    A compound of vanadium has a magnetic moment of 1.73 BM. What is the electronic configuration of vanadium ion in the compound?

  • Question 3
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    2.0 g of benzoic acid dissolved in 25.0 g of benzene shows a depression in freezing point equal to 1.62 K. Molal depression constant kf of benzene is 4.9 K kg mol-1. What is the percentage association (closest approximation) of the acid?

  • Question 4
    4 / -1

    Directions For Questions

    The standard reduction potentials at 298 K for the following half-cell reactions are given below:

    Zn2+ (aq) + 2e- ⇌ Zn (s); -0.762 V

    Cr3+ (aq) + 3e- ⇌ Cr (s); -0.74 V

    2H+ (aq) + 2e- ⇌ H2 (g); +0.00 V

    Fe3+ (aq) + e- ⇌ Fe2+ (aq); +0.77 V

    ...view full instructions

    Which one of the following is the strongest reducing agent?

  • Question 5
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    A nuclide of Barium, an alkaline earth metal, undergoes radioactive decay by emission of three α-particles in succession. The resulting daughter element belongs to which of the following groups of the periodic table?

  • Question 6
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    When CO2 is bubbled through a solution of barium peroxide in water,

  • Question 7
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    Select the correct order of initials T (True) and F (False) for the following statements:

    (I) Co(II) is stablised in the presence of strong field ligands, while Co(III) is stablised in the presence of weak field ligands.

    (II) [Cr(NH3)6]3+ is an inner orbital complex with crystal field stablisation energy equal to -1.2Δo.

    (III) In [CoF6]3-, F- is a weak field ligand so that Δo < P and it is a low spin complex.

    (IV) Crystal field splitting in ferrocyanide ion is greater than that in ferricyanide ion.

  • Question 8
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    Which of the following statements is correct?

  • Question 9
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    Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of

  • Question 10
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    The following reactions are carried out.

    The final product 'Z' is

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