Given the correct order of initials or F for the following statements. Use T if staement is true and F if it is false:

(i)(CH3)2P(CF3)3 is non-polar (CH3)3P(CF3)2  is polar molecule 

(ii) CH3P^CH3 bond angles are equal in (CH3)3P(CF3)2  molecule

(iii) PF3 will be more soluble in polar solvent than SiF4

(a) TTF                (b) FFT                     (c) FFF                           (d) FTT

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Which substance has the strongest London dispersion forces?

 (a) SiH4

(b) CH4

(c) SnH4

(d) GeH4

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Types of Bonding
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Which of the following compounds has the lowest boiling point?

(a) HF

(b) HCl

(c) HBr 

(d) HI 

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Hydrogen Bonding
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Which of the following is the correct order for increasing bond angle?

(a) NH3<PH3<AsH3<SbH3                    (b)H2O<OF2<Cl2O(c) H3Te+<H3Se+<H3S+<H3O+            (d) BF3<BCI3<BBr3<BI3

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Covalent Bonding
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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

Concept Questions :-

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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