Out of the two compounds shown below, the vapour pressure of B at a particular tempreture is expected to be :

                                       and

                                                   (A)                                  (B)

(a) Highr than that of A

(b) Lower than that of A

(c) same as that of A 

(d) can be higher or lower depending upon the size of the vessel 

Concept Questions :-

Hydrogen Bonding
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solubillity of alkali metal fluorides increases down the group select correct explanation for given statement :

(a) Hydration energy increase and lattice energy decrease down the group 

(b) both energy decrease down the group but decrease in hyderation energy is rapid

(c) both energy decrease down the group but decrease in lattice energy is rapid 

(d) both energy decrease down the group but increase in hyderation energy is rapid

Concept Questions :-

Lattice/Hydration Energy
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In which of the following compounds BF bond length is shortest ?

(a) BF4-       (b) BF3NH3

(c) BF3         (d) BF3NCH33

Concept Questions :-

Hybridisation
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In terms of polar character which of the following order is correct ?

(a) NH3<H2O<HF<H2S    (b) H2S<NH3<H2O<HF

(c) H2O<NH3<H2S<HF    (d) HF<H2O<NH3<H2S

Concept Questions :-

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The correct order or boiling point is:

(a) T2<D2<H2                                 

(b) n-pentane<neo pentane

(c) Xe<Ar<He

(d) m-nitrophenol>o-nitrophenol

Concept Questions :-

Types of Bonding
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The correct order of 'SO' bond length is:

(a) SO32->SO42->SO2>SO2     (b) SO32>SO24>SO2>SO3

(c) SO43>SO32>SO2>SO3    (c) SO42>SO32>SO3>SO2

Concept Questions :-

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The linear structure is possessed by :

(a) SnCl2

(b) NCO-

(c) NO2+

(d) CS2

 

Concept Questions :-

Hybridisation
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Cis-butene dioic acid Ka1{-H+}X-1Ka2{-H+}X22-

Trans-butene dioic acid Ka1'{-H+}Y-1Ka2·{-H+}Y22-

The incorrect statement regarding above the information is:

(a) X22- species is more basic than Y22- species 

(b) X1- species is more basic than Y1- species

(c) Ka1 is greater than K'a2 

(d) K'a2 is greater than K'a2

Concept Questions :-

Acid, Base and Fajan's Rule
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In which of the following compounds octet is complete and incomplete for all atoms:

                 Al2Cl6      Al2CH36       AlF3      Dimer of BeCl2     Dimer of BeH2                               

(a)                  IC               IC             IC                     C                         C

(b)                  C                IC             IC                     C                         IC

(c)                  C                IC             C                      IC                        IC

(d)                 IC                C              IC                    IC                        IC

where C denotes Complete and IC incomplete.

Concept Questions :-

Covalent Bonding
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In which of the following metal of metal bond is present?

(a) Cupric chloride            (b) stannous chloride

(c) mercurous chloride      (d) mercuric chloride

Concept Questions :-

Types of Bonding
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