Which one of the following has the regular tetrahedral structure?
XeF4
[Ni(CN)4]2-
BF4-
BF4-
C.
BF4-
Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?
(n -1)d8 ns2
(n-1)d5 ns2
(n-1)d3 ns2
(n-1)d3 ns2
As the temperature is raised from 20°C to 40°C, the average kinetic energy of neon atoms changes by a factor of which of the following?
1/2
2
313/293
313/293
The maximum number of 90° angles between bond pair of electrons is observed in
dsp3 hybridization
sp3d2 hybridization
dsp2 hybridization
dsp2 hybridization
In Vander Waals equation of state of the gas law, the constant ‘b’ is a measure of
intermolecular repulsions
intermolecular collisions per unit volume
Volume occupied by the molecules
Volume occupied by the molecules
An ideal gas expands in volume from 1×10-3 m3 to 1×10-2 m3 at 300 K against a constant pressure of 1×105 Nm-2. The work done is
-900 J
900 J
2780 J
2780 J
What is the equilibrium expression for the reaction P4(s) +5O2(g)⇌ P4O10(s)?
Kc = [P4O10] / P4] [O2]5
Kc = 1/[O2]5
Kc = [O2] 5
Kc = [O2] 5
The equilibrium constant for the reaction N2(g) + O2(g) ⇌ 2NO(g) at temperature T is 4×10-4. The value of Kc for the reaction NO(g) ⇌ 1/2N2(g) + 1/2O2(g) at the same temperature.
2.5×102
0.02
4 x 10-4
4 x 10-4