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12th Standard Chemistry English Medium Free Online Test Creative One Mark Questions with Answer Key

12th Standard

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Chemistry

Time : 00:10:00 Hrs
Total Marks : 10
    Answer all the questions
    10 x 1 = 10
  1. Which of the following is not a mineral of aluminium?

    (a)

    Bauxite

    (b)

    Cryolite

    (c)

    China clay

    (d)

    Malachite

  2. Select the incorrect statement regarding B2H6.

    (a)

    It contains B-B ionic bond

    (b)

    Each boron is Sp3 hybridised

    (c)

    It has two types of hydrogen bonds

    (d)

    it is used as a reducing agent

  3. Catenation property of group 15 elements, follow the order _______.

    (a)

    N < P < As < Sb < Bi

    (b)

    P >> N > As > Sb > Bi

    (c)

    P < N < As < Sb < Bi

    (d)

    N>> P > As > Sb > Bi

  4. Most of the transition metal ions are coloured, because of the ________.

    (a)

    presence of unpaired electrons

    (b)

    energy gap between two energy levels is very small

    (c)

    both (a) and (b)

    (d)

    neither (a) nor (b)

  5. An aqueous solution of (PdCI)2 4NH3, when treated with excess of AgNO3 precipitated 2 moles of AgCI. Predict the secondary valency of the compound _______.

    (a)

    2

    (b)

    3

    (c)

    4

    (d)

    6

  6. In which of the following arrangements, octahedral voids are formed?

    (a)

    fcc

    (b)

    bcc

    (c)

    simple cubic

    (d)

    hcp

  7. What would be the rate of disappearance of oxygen, if the rate of formation of nitric oxide (NO) is 3.6 x 10-3mol L-1 s-1?

    (a)

    4 x 10-3mol L-1s-1

    (b)

    4 x 10-3mol-1 L-1s-1

    (c)

    4.5 x 10-3mol L-1s-1

    (d)

    4.5 x 10-3mol-1 L-1s-1

  8. Which of the following is not a Lewis acid?

    (a)

    SiCl4

    (b)

    AICl3

    (c)

    SO3

    (d)

    CO

  9. Pick out the correct statement regarding resistance of an electrolytic solution ________.

    (a)

    It is inversely proportional to the length (I)

    (b)

    It is inversely proportional to the cross sectional area (A)

    (c)

    It is directly proportional to the cross sectional area (A)

    (d)

    Resistivity is denoted by p (rho)

  10. Oxidation takes place at _________ and reduction takes place at ________.

    (a)

    anode, cathode

    (b)

    cathode, anode

    (c)

    anode

    (d)

    cathode

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