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Chemistry Test ...

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  • Question 1
    4 / -1

    Which of the following statement concerning lanthanides is false?

  • Question 2
    4 / -1

    The emission spectra is observed by the consequence of transition of electrons from high energy state to ground state of He+ ion. If six different photons are observed during the emission spectra then what will be the minimum wavelength during the emission?

  • Question 3
    4 / -1

    A compound ‘X’ with molecular formula C5H10O does not react with sodium displacing hydrogen, neither does it reacts with phosphorus pentachloride to give hydrogen chloride. X reduces an alkaline solution of copper (II) salt on gentle warming. From this information compound X is

  • Question 4
    4 / -1

    A mixture of NaHC2O4 and KHC2O4.H2C2O4 required equal volumes of 0.2 (N) KMnO4 and 0.12 (N) NaOH separately. What is the molar ratio of NaHC2O4 and KHC2O4.H2C2O4 in the mixture?

  • Question 5
    4 / -1

    Which of the following, when reacting with anhy. ZnCl2 and conc. HCl turns solution cloudy immediately?

  • Question 6
    4 / -1

    Which of the following will not give test for nitrogen in Lassaigne’s test?

  • Question 7
    4 / -1

    Arrange the following in the increasing order of paramagnetism

    (i) [Fe(H2O)6]Cl3

    (ii) K4[Fe(CN)6]

    (iii) K3[Fe(CN)6]

    (iv) [Fe(H2O)6]SO4.H2O

  • Question 8
    4 / -1

    Most acidic compound is :

  • Question 9
    4 / -1

    An optically active Alkyl bromide C6H13Br (X) upon treatment with Ethanolic KOH solution forms two alkenes Y and Z with their mol. formula C6H12. Y and Z are positional isomers. Z upon treatment with cold dilute alk. KMnO4 solution gives a meso-diol. Hence, X is

  • Question 10
    4 / -1

    The true statement for the acids of phosphorus H3PO2, H3PO3 and H3PO4 is

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