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Chemistry Test - 3

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Chemistry Test - 3
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Which of the following compound gives dye test ?

    Solution

    Solution

    Dye test is given by Aromatic 1∘ amines

  • Question 2
    1 / -0

    When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to

  • Question 3
    1 / -0

    Electrode potentials(Eored) of 4 elemnets A,B,C,D are -1.36V, - 0.32V, 0V, -1.26 V respectively. The decreasing reactivity order of these elements is

    Solution

    Solution

    It is because among the positive potential higher positive will be more reactive . among negative least negative will be more reactive .

  • Question 4
    1 / -0

    Same amount of electric current is passed through solutions of AgNO₃ and HCI. If 1.08 g of silver is obtained in the first case, the volume of hydrogen liberated at S.T.P. in the second case is

  • Question 5
    1 / -0

    Heating methyl phenyl ether with HI gives

  • Question 6
    1 / -0

    When the densities of the ore particles and gangue particles are different, then the ore is concentrated by

  • Question 7
    1 / -0

    The rate of diffusion of methane at a given temperature is twice that of a gas X. The molecular weight of X is

    Solution

    Solution

    Let rate of diffusion of gas x, r1 = a

    Therefore, rate of diffusion of methane,r2 = 2 a

    According to Graham's Law of Diffusion

  • Question 8
    1 / -0

    A pseudo solid is

  • Question 9
    1 / -0

    The most stable hydride is

    Solution

    Solution

    NH3 is the most stable hydride among the hydrides of group 15 elements because the strength of E-H (Here E = N, P, As, Sb, or Br) bond decreases down the group due to increase in size of the central atom.

  • Question 10
    1 / -0

    Phosphorus has the oxidation state of +3 in

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