Select correct statement about hydrolysis of BCl3 and NCl3 :

(a) NCl3 is hydrolysed and gives HOCl but BCl3 is not hydrolysed

(b) Both NCl3 and BCl3 on hydrolysis gives HCl

(c) NCl3 on hydrolisis gives HOCl  but BCl3 gives HCl

(d) Both NCl3 and BCl3 on hydrolysis gives HOCl

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The correct sequence of polarity of the following molecule

(1) Benzene                          (2) Inorganic Benzene

(3) PCl3F2                            (4) PCl2F3

      1           2            3            4                              1             2             3              4 

(a) P          NP          NP           P                         (b) NP           NP           NP             P

(c) NP        P            NP           P                         (d) NP            P             P              NP

(Where P=polar, NP=non-polar)

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The incorect order of boiling point is:

(a)H2O>CH3OH                 (b)NCH33>NHCH32

(c) H3PO4>ME3PO4           (d) CH3N3>HN3

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When the substances Si, KCl, CH3OH and C2H6 are arranged in order of increasing melting point , what is the correct order?

(a) Si, KCl ,CH3OH ,C2H6

(b) CH3OHC2H6, Si ,KCl 

(c) KCl, Si, C2H6CH3OH

(d) C2H6, CH3OH , KCl , Si

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Lattice/Hydration Energy
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Iodine molecules are held in the solid lattice by............

(a) London forces                     (b) dipole-dipole interactions

(c) Covalent bonds                   (d) coulombic force

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Vanderwaal Force
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Which substance has the highest melting point ? 

(a) CO

(b) CO2

(d) SiO2

(d) P2O5

Concept Questions :-

Lattice/Hydration Energy
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Nodal planes of π-bond(s) in CH2=C=C=CH2 are located in:

(a) all are in molecular plane

(b) two in a molecular plane and in a plane peerpendicular to moleclar plane which contains C-C σ-bond

(c) one in molecular plane and two in plane perpendicular to molecular plane which bisects C-C σ-bonds

(d) two in a molecular plane and one in a plane perpendicular to molecular plane which bisects C-C σ-bonds at right angle.

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Hybridisation
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The hybridisation of the  central  atom will change when: 

(a) NH3 combines with H+

(b) H3BO3combines with OH-

(c) NH3 forms NH2-

(d) H2O combines with H+

Concept Questions :-

Hybridisation
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Spacies having maximum 'CIO' bond order is:

aCIO-3                      bCIO3          cCIO2                        d CIO-2

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Which of the following have X-O-X linkage?

(where X is Central atom)

(i) Cr2O72-                            (ii) S2O32-                       

(iii) Pyrosilicate                     (iv) Hyponitrous Acid

(a) (i) (iii)                                             (b) (iii) (iv)

(c) (i) (iii) (iv)                                       (d) (i) (ii)

Concept Questions :-

Types of Bonding
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