351. Which of the following is not a unit of pressure?
Parsec
Kilo-pascal
Bar
Newton/metre²
✅ The correct answer is option A.
Statiometery MCQs
352. Which of the following terms of Vander Walls equation of state for a non-ideal gas accounts for intermolecular forces?
RT
(p +a/v²)
(V – b)
1/RT
✅ The correct answer is option A.
353. With rise in pressure, the solubility of gases in solvent, at a fixed temperature
Increases
Decreases
Remains unchanged
Decreases linearly
✅ The correct answer is option A.
354. A vessel of volume 1000 m³ contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately
17
20
25
34
✅ The correct answer is option A.
355. The heat of vaporisation __________ with increase in pressure.
Increases
Decreases
Becomes zero at critical pressure
Both B and C
✅ The correct answer is option D.
356. In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the
Total pressure
Absolute humidity at a given temperature
Both A & B
Neither A nor B
✅ The correct answer is option C.
357. Viscosity of atmospheric air may be about __________ centipoise.
0.015
1.5
15
150
✅ The correct answer is option A.
358. Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult’s law is proportional to the
Temperature
Volume of solution
Moles of non-volatile solute
None of these
✅ The correct answer is option A.