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Chemical Bondin...

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  • Question 1
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    There is no S-S bond in

  • Question 2
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    Which of the following molecules are expected to exhibit intermolecular H-bonding

    I. Acetic acid

    II. o-nitrophenol

    III. m-nitrophenol

    IV. o-boric acid

  • Question 3
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    A : tetracyanomethane                           B : Carbondioxide

    C : Benzene                                           D : 1, 3-buta-di-ene

    Ratio of σ and π bond is in order:

  • Question 4
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    Which of the following models best describes the bonding within a layer of the graphite structure ?

  • Question 5
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    In  , the shape is square planer. The number of bond pair-lone pair repulsion at 90° are :

  • Question 6
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    In which of the following molecules / ions all the bonds are not of equal length.

  • Question 7
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    The critical temperature of water is higher than that of O2 because the H2O molecules has :

  • Question 8
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    Compound with maximum ionic character is formed from :

  • Question 9
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    Mg2C3 reacts with water forming propyne, C3 4- has

  • Question 10
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    Which of the following has a geometry different from the other three species (having the same geometry)?

  • Question 11
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    Which of the following molecule does not have open book structure.

  • Question 12
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    The hybridisation and geometry of BrF3 molecules are :

  • Question 13
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    Pick out the incorrect statement ?

  • Question 14
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    Ethanol has a higher boiling point than dimethyl ether though they have the same molecular weight. This is due to :

  • Question 15
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    A simplified application of MO theory to the hypothetical ‘molecule’ OF would give its bond order as

  • Question 16
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    Which of the following contains electrovalent and covalent bonds ?

  • Question 17
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    Which of the following species is paramagnetic ?

  • Question 18
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    Bond order of Be2 is

  • Question 19
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    The volatility of HF is low because of :

  • Question 20
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    Which of the following sets of characteristics leads to the increase in solubility of ionic substances ?

  • Question 21
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    Dipole-induced dipole interactions are present in which of the following pairs?

  • Question 22
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    Which one of the following conversions involve change in both hybridization and shape?

  • Question 23
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    The molecule is not having 3c-2e bond.

  • Question 24
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    Among KO2, AlO-2 ,BaO2 and NO+2 unpaired electron is present in :

  • Question 25
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    Which has maximum dipole moment ?

  • Question 26
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    Ethanol has a higher boiling point than dimethyl ether though they have the same molecular weight. This is due to :

  • Question 27
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    Arrange the following in order of decreasing boiling point :

    (I) n-Butane (II) n-Butanol (III) n-Butyl chloride (IV) Isobutane

  • Question 28
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    Which of the following compounds would have significant intermolecular hydrogen bonding ?

    HF, CH3OH, N2O4, CH4

  • Question 29
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    For H2O2, H2S, H2O and HF , the correct order of decreasing extent of hydrogen bonding is :

  • Question 30
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    A simplified application of MO theory to the hypothetical `molecule' OF would give its bond order as

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