1 |
Which element has highest ionization potential. |
Li
B
Be
C
|
2 |
Which of the following molecule obey octet rule. |
BF3
BCl3
NH2
SF6
|
3 |
Which compound does not obey the octet rule. |
NH3
BCl3
H2O
CH4
|
4 |
SP3-hybridization in important in describing the bonding in |
|
5 |
If we want to change O2to O2-1The electron is to be placed in |
|
6 |
VSEPR theory was proposed by |
Nyholn and Gillespie
Kossel
Lewis
Sidwick
|
7 |
The shape of H3O is |
Tetrahedral
Angular
Trigonal planer
Pyramidaj
|
8 |
Which of the following molecules has a co-ordinate covalent bond |
NH<sub>4</sub>CI
NaCI
HCI
AICI<sub>3</sub>
|
9 |
The nature of bond in diamond is |
Electrovalent
Metallic
Coordinate covalent
Covalent
|
10 |
Fluorine molecule (F2) is formed by the overlap of |
s - s orbital
s - p orbital
p - p head on overlapping of orbitals
p - p parallel overlapping of orbitals
|
11 |
Which of the following is true for ionic compounds |
They are non-electrolytes in the molten state
They have bonds which are directional
They conduct electricity in solid state
They are generally more soluble in polar solvents than in non-polar solvents
|
12 |
Those elements whose electronegativities are 1.2 and 3.2, react to form |
Ionic bond
Covalent bond
Gaseous substance
Definiting a liquid substance
|
13 |
The shielding effect of the inner electrons is responsible for |
Increasing ionization energy values
Decreasing ionization energy values
Increasing electron affinity
Increasing electonegativity
|
14 |
The octet rule in not followed in the formation of |
NF<sub>3</sub>
CF<sub>4</sub>
CCI<sub>4</sub>
PCI<sub>5</sub>
|
15 |
Which of the following species has unpaired electrons in anti-bonding molecular orbitals |
O<sub>2</sub><sup>+2</sup>
N<sub>2</sub><sup>-2</sup>
B<sub>2</sub>
F<sub>2</sub>
|
16 |
Which of the hydrogen halides has the highest percentage of ionic character |
HF
HBr
HCI
HI
|
17 |
Which of the following molecules has zero dipole moment |
NH<sub>3</sub>
CHCI<sub>3</sub>
H<sub>2</sub>O
BF<sub>3</sub>
|