Law of Petit and Dulong
Kopp’s rule
Nearnst heat theorem
Trouton’s rule
✅ The correct answer is option B.
Statiometery MCQs
72. Kopp’s rule is helpful in finding the
Heat capacities of solids
Heat capacities of gases
Molal heat capacities of gases
Activation energy
✅ The correct answer is option A.
73. The density of a liquid is 1500 kg/m³. Its value in gin/litre will be equal to
1.5
15
150
1500
✅ The correct answer is option D.
74. The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vapourised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is
0.4
0.6
0.8
0.2
✅ The correct answer is option B.
75. Which of the following is not a unit of length?
Parsec
Angstrom
Barn
Fermi
✅ The correct answer is option C.
76. Dissolving a solute in a solvent does not change its
Specific heat
Vapour pressure
Viscosity
None of these
✅ The correct answer is option D.
77. __________ equation gives the effect of temperature on heat of reaction.
Kirchoffs
Maxwell’s
Antonie
Kistyakowsky
✅ The correct answer is option A.
78. The increase in the temperature of the aqueous solution will result in decrease of its
Weight % of the solute
Mole fraction of the solute
Molarity
Molality
✅ The correct answer is option C.
79. In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult’s law, then component B
Exhibits positive deviation from Raoult’s law
Exhibits negative deviation from Raoult’s law
Obeys Raoult’s law
May exhibit either positive or negative deviation from Raoult’s law
✅ The correct answer is option A.
80. Boiling point of a solution as compared to that of the corresponding solvent is
Less
More
Same
Either more or less; depends upon the solvent
✅ The correct answer is option B.