1 |
What type of bonding is present in NH4Cl |
Ionic
Covalent
Co ordinate covalent
All of these
|
2 |
Which one of the following has no tendency of form coordinate covalent bond with H+ |
NH3
H2O
CH4
CH3OH
|
3 |
Which of the following is a polar molecule |
CCl4
HCl
BF3
CO2
|
4 |
Which one of the following has the greater ionic characters in it. |
HF
HCl
H2O
H2
|
5 |
Ionic compound do nto show the phenomenon of Isomerism because bond are. |
Directional and rigid
Non directional and rigid
Non directional and non rigid
All above
|
6 |
Which pair are iso electronic. |
Na+ and Cl-
Na+ and Mg+2
N-3 and P-3
H+ and H-
|
7 |
Along period of periodic table shielding effects. |
Increases
Decreases
Remain constant
First increases than decreases
|
8 |
Chlorine atom and chloride Cl- ions |
Have same chemical and physical properties
Are allotropes of chlorine
Have same number of electrons
Have same number of proton
|
9 |
In a group of periodic table, ionization energy. |
Decreases
Increases
Remains same
First increases than increases
|
10 |
In a period of periodic table, atomic radii |
Increases
Decreases
Remain same
First decreases than increases
|
11 |
Which element has highest ionization potential |
Li
Na
K
Rb
|
12 |
Which statement is true about Na and Na+ |
size of Na is greater than Na+
Size of Na is smaller than Na+
Both have equal size
Both have same properties
|
13 |
Which has zero potential energy. |
When H atom is independent
When two H atoms combine to form H2 molecule
When two H atoms super impose to each other
When two H atoms have weak attraction between them
|
14 |
Which of the following molecules contain six bonding electrons. |
CH4
CO2
BF3
H2S
|
15 |
Which of the following species has unpaired electrons in antibonding molecular orbitals. |
O2<sup>+2</sup>
N2<sup>-2</sup>
B2
F2
|
16 |
Which of the hydrogen halides has the highest percentage of ionic character. |
HF
HBr
HCl
HI
|
17 |
Which of the following molecule has zero dipole moment. |
NH3
CHCl3
H2O
BF3
|