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Chemistry Test ...

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  • Question 1
    4 / -1

    A saturated aqueous solution of sparingly soluble salt AB3 has the vapour pressure 0.08 mm lesser than the vapour pressure 17.33 mm of solvent at 25oC. The solubility product of AB3 is :

  • Question 2
    4 / -1

    Photoelectric emission is observed from a surface for frequencies v1 and v2 of the incident radiation (v1 > v2). If the maximum kinetic energies of the photoelectrons in the two cases are in the ration l : k then the threshold frequency v0 is given by :

  • Question 3
    4 / -1

    In the following electron dot structure calculate the formal charge from left to right nitrogen atom ?

  • Question 4
    4 / -1

    A 50 litre vessel is equally divided into three parts with the help of two stationary semi permeable membrane (SPM). The vessel contains 60 g H2 gas in the left chamber, 160 g O2 in the middle and 140 g N2 in the right one. The left SPM allows transfer of only H2 gas while the right one allows the transfer of both H2 and N2. The final ratio of pressure in the three chambers.

  • Question 5
    4 / -1

    Acetamide is treated separately with the following reagents. Which of these would give methylamine ?

  • Question 6
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    White fumes. Metal (M) can be

  • Question 7
    4 / -1

    Copper ore is heated in a blast furnace after mixing with silica. Iron oxide slags off as iron silicate and copper is produced in the form of

  • Question 8
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    The ionization isomer of [Cr(H2O)4Cl(NO2 )]Cl is

  • Question 9
    4 / -1

    What is the pH of 0.01 M glycine solution ? For glycine 

  • Question 10
    4 / -1

    Which one of the following cannot be prepared from B2H6 ?

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