Worksheetschemical bonding icse
Total questions: 19
Worksheet time: 14mins
When two species A and B form an electron-pair bond and A does not provide its electrons for bonding, the bond present between A and B must be
(a) ionic (b) covalent (c) dative (d) Hydrogen
a
b
c
d
The type of bond formed during the hydration of cation is
(a) ionic
(b) covalent
(c) electrostatic
(d) coordinate bond
a
b
c
d
Which of the following bonds has the most polar character?
(a) C-O
(b) C-Br
(c) C-S
(d) C-F
a
b
c
d
Which of the following compounds has electrovalent linkage?
(a) CH3Cl
(b) NaCl
(c) CH4
(d) Cl2
a
b
c
d
CCl4 is insoluble in water because
(a) CCl4 is nonpolar and water is polar
(b) water is nonpolar and CCl4 is polar
(c) water and CCl4 are both polar
(d) none
a
b
c
d
A molecule with triple covalent bonds is
(a) N2
(b) H2
(c) F2
(d) C2H4
a
b
c
d
The nature of bonding in CCl4 and CaH2 is
(a) electrovalent in both CCl4 and CaH2
(b) covalent in CCl4 and electrovalent in CaH2
(c) electrovalent in CCl4 and covalent in CaH2
(d) covalent in both CCl4 and CaH
a
b
c
d
Each of the following pairs of chemical species will combine. Which of the following combinations is best explained by the coordinate covalent bond?
(a) H2 + I2
(b) Mg +O2
(c) Cl + Cl
(d) H+ + H2O
a
b
c
d
As compare to ionic compounds, covalent bond has
a. high melting but low boiling point
b. low melting but high boiling point
c. low melting and boiling point
d. high melting and boiling point
a
b
c
d
Which among the following is not a property of Ionic bond?
a) Losing of electrons
b) Gain of electrons
c) Sharing of electrons
d) Transfer of electrons
a
b
c
d
Which one of the following chloro-compounds is non-polar?
HCl
CCl4
CH3Cl
CHCl3
Which one of the following contains a coordinate bond?
N2
NH3
NH2–
NH4+
What type of bond exists in a molecule of hydrogen iodide?
ionic
metallic
polar covalent
nonpolar covalent
Which atom has the greatest attraction for electrons in a chemical bond?
C
O
N
F
The P-Cl bond in PCl3 is
nonpolar covalent
polar covalent
ionic
coordinate covalent
Atom X has the electron configuration 2-8-2 and it bonds with Atom Y which has the electron configuration 2-8-7. Which formula represents the compound formed between atom X and atom Y?
XY
X2Y
XY2
X2Y3
What type of bond forms between potassium and oxygen?
polar covalent
nonpolar covalent
coordinate covalent
ionic
The number of covalent, coordinate bond and lone pair in hydronium ion is:
2,2,1
1,1,1
0,2,1
2,1,1
What elements generally make an ionic bond?
metal and non metal
metal and metal
non metal and non metal
