The interaction energy of London forces between two particles is proportional to rx, where r is the distance between the particles. The value of x is :
A
3
B
$$-$$3
C
$$-$$6
D
6
Explanation
For London dispersion forces.
$$E \propto {1 \over {{r^6}}}$$
Hence, x = $$-$$6
3
JEE Main 2020 (Online) 3rd September Evening Slot
MCQ (Single Correct Answer)
A mixture of one mole each of H2
, He and O2
each are enclosed in a cylinder of volume V at
temperature T. If the partial pressure of H2
is 2 atm, the total pressure of the gases in the
cylinder is :
A
14 atm
B
38 atm
C
6 atm
D
22 atm
Explanation
According to Dalton’s law of partial pressure, pi
= xi
× PT