Engineering Thermodynamics Multiple Choice Questions on Properties of Pure Substances

This is an MCQ-based quiz on the topic of Properties of Pure Substances.

This includes the following:-

P-V diagram for Pure Substance
Pure Substance
P-T and T-S diagram for Pure Substance
Quality or Dryness Fraction
Steam Tables
Measurement of Steam Quality

Start Quiz

At a pressure below the triple point line,

the substance cannot exist in the liquid phase the substance when heated transforms from solid to vapour both of the mentioned none of the mentioned

The isotherm passing through the critical point is called the critical isotherm.

true false

A piston –cylinder device contains 0.06m3 of saturated water vapour at 350 kPa pressure. Determine the temperature and mass of the vapour inside the cylinder.

0.104 kg 0.124 kg 0.134 kg 0.114 kg

A rigid tank contains 10 kg of water at 90°C. If 8 kg of the water is in the liquid form and the rest is in the vapour form, determine the pressure in the tank.

60.183 kPa 70.183 kPa 80.183 kPa 90.183 kPa

A rigid tank contains 10 kg of water at 90°C. If 8 kg of the water is in the liquid form and the rest is in the vapour form, determine the volume of the tank.

1.73 m3 2.73 m3 3.73 m3 4.73 m3

An 80 litre vessel contains 4 kg of R-134a at a pressure of 160 kPa. Determine the temperature.

-10.60°C -13.60°C -15.60°C -19.60°C

Which of the following represents the specific volume during phase transition.

Vf-Vg

Vg-Vf

Vf+Vg

None of the mentioned

For water, as temperature increases, volume always increases?

True

False

The triple point is a line on the p-V diagram, where all the three phases, solid, liquid and gas exist.