Chemical Bonding 149
1. Nature of the bond formed between two elements
depends on the
(a) Oxidation potential (b) Electronegativity
(c) Ionization potential (d) Electron affinity
2. Two elements
X
and
Y
have following electronic
configurations
262622 4,33,22,1 spspssX
and
52622 33,22,1 pspssY
. The expected compound
formed by combination of
X
and
Y
is [BHU 1990]
(a)
2
XY
(b)
25YX
(c)
52YX
(d)
5
XY
3. Electricity do not pass through ionic compounds
(a) In solution (b) In solid state
(c) In melted state (d) None of these
4. From the following which compound on heating
readily sublimes
(a)
NaCl
(b)
2
MgCl
(c)
2
BaCl
(d)
3
AlCl
5. Which one in the following contains ionic as well
as covalent bond [IIT 1979; CPMT 1983; DPMT 1983]
(a)
4
CH
(b)
2
H
(c)
KCN
(d)
KCl
6. The solution of sugar in water contains
[NCERT 1972; MP PET 2000]
(a) Free atoms
(b) Free molecules
(c) Free ions
(d) Free atoms and free molecules
7. In which of the following reactions, there is no
change in the valency [NCERT 1974; CPMT 1971, 78]
(a)
KClKClOKClO 43 34
(b)
SOHSHSO 322 222
(c)
224422 OHBaSOSOHBaO
(d)
22 22 BaOOBaO
8. The octet rule is not followed in [BHU 1981]
(a)
2
F
(b)
NaF
(c)
2
CaF
(d)
3
BF
9. Sodium chloride is an ionic compound whereas
hydrogen chloride is a gas because [KCET 2002]
(a) Sodium is reactive
(b) Covalent bond is weaker than ionic bond
(c) Hydrogen chloride is a gas
(d) Covalent bond is stronger than ionic bond
10. Which one of the following molecules has a
coordinate bond [CPMT 1988, 94]
(a)
ClNH 4
(b)
3
AlCl
(c)
NaCl
(d)
2
Cl
11. Co-ordinate bond is absent in [RPMT 2002]
(a)
4
BH
(b)
2
3
CO
(c)
OH 3
(d)
4
NH
12. The dipole moment of chlorobenzene is 1.73 D.
The dipole moment of
p
-dichlorobenzene is
expected to be
[CPMT 1991]
(a) 3.46 D (b) 0.00 D
(c) 1.73 D (d) 1.00 D
13. Polarization of electrons in acrolein may be
written as
[IIT 1988]
(a)
OHCCHHC
2
(b)
OCHCHHC 2
(c)
OCHHCHC
2
(d)
OCHCHHC 2
14. The order of dipole moments of the following
molecules is
[Roorkee 2000]
(a)
43223 CClClCHClCHCHCl
(b)
43322 CClCHClClCHClCH
(c)
43223 CClCHClClCHClCH
(d)
43322 CClClCHCHClClCH
15. The electronegativity of
NOHC ,,,
and
S
are 2.5,
2.1, 3.5, 3.0 and 2.5 respectively. Which of the
following bond is most polar [EAMCET 1986]
(a)
HO
(b)
HS
(c)
HN
(d)
HC
16. Which of the following bond has the most polar
character
[DPMT 1982; CBSE PMT 1992; C PMT 1999]
(a)
OC
(b)
BrC
(c)
SC
(d)
FC
17. The geometry of
SH2
and its dipole moment are[IIT 1999]
(a) Angular and non-zero (b) Angular and zero
(c) Linear and non-zero (d) Linear and zero
