JEE Advanced 2020 Full Test 5 Paper 2

Possible binary solutions are, Benzene + Toluene; Benzene + Xylene; Toluene + Xylene and ternary solution is Benzene + Toluene + Xylene.
In equimolar solutions, mole fractions are 1∕2 in binary solution and 1∕3rd in ternary solution for each component.
∴ For Benzene + Toluene, P=‌

1

2

(75)+‌

1

2

(22)=‌

97

2

=48.5 or 48‌

1

2

For Benzene + Xylene P=‌

1

2

(75)+‌

1

2

(10)=‌

85

2

=42.5
For Xylene + Toluene P=‌

1

2

(22+10)=16
For Ternary solution P=‌

1

3

(75+22+10)=‌

107

3

=35‌

2

3

Hence, option (D) is not possible