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Chemistry Test ...

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  • Question 1
    4 / -1

    Which of the following is incorrect match for Bravais lattices of given crystal system -

  • Question 2
    4 / -1

    For the bimolecular gaseous reaction :

    2R(g) → Product, the fraction of molecules having sufficient energy for effective collision is 2.06 × 10–9 at 127°C. The activation energy for reaction is about (ln 2.06 = 0.727, ln 10 = 2.303) -

  • Question 3
    4 / -1

    An aqueous solution contains 4% (w/v) NaOH and 5.3% (w/v) Na2CO3. 40 ml of this solution is titrated with 2.0 M- HCl solution, using phenolphthalein indicator. The volume of HCl solution needed for end point is.

  • Question 4
    4 / -1

    A sample of H-atoms in ground state absorb the electromagnetic radiations of x eV/quanta. Subsequantly, the sample emit radiations of 15 different photon energies. The energy of emited photon of longest wavelength is -

  • Question 5
    4 / -1

    Write the IUPAC name of the following complex [Co(NH3)3(σ-C3H5)(en)]SO4.

    (I) η1-allyltriamineethylenediamine cobalt(III) sulphate

    (II) η1-allyltriammineethylenediamine cobalt(III) sulphate.

    (III) Triamminecyclopropylethylelnediamine cobalt(III) sulphate.

    (IV) Triamminecyclopropylethylenediamine cobaltate(III) sulphate.

  • Question 6
    4 / -1

    Which of the following ores is the ore of copper?

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