1. . “At constant pressure, volume of gas is directly proportional to its temperature” is called
(A) Boyle’s law
(B) Charles’s law
(C) Gay Lussac’s law
(D) Joule’s law
2. . In Charles’s law …………………… remains constant.
(A) Temperature
(B) Pressure
(C) Volume
(D) Heat
3. . The value of gas constant R is
(A) 0.287 J/kg·K
(B) 28.7 J/kg·K
(C) 2.87 J/kg·K
(D) 287 J/kg·K
4. . If temperature remains constant, pressure is inversely proportional to volume. This is
(A) Charles’s law
(B) Gay Lussac’s law
(C) Boyle’s law
(D) Joule’s law
5. . When gas is heated at constant volume
(A) Pressure increases
(B) Temperature increases
(C) Both increase
(D) None
6. . Which is not a thermodynamic property?
(A) Pressure
(B) Temperature
(C) Heat
(D) Specific volume
7. . General gas equation is obtained by combining
(A) Boyle’s and Gay Lussac’s law
(B) Boyle’s and Joule’s law
(C) Boyle’s and Gay Lussac’s law
(D) Boyle’s and Charles’s law
8. . When gas is heated at constant pressure, temperature and volume
(A) Decrease
(B) Increase
(C) Remain constant
(D) Are equal
9. . Heat required to raise temperature of unit mass by one degree is
(A) Latent heat
(B) Sensible heat
(C) Total heat
(D) Specific heat
10. . Which variable controls properties of a perfect gas
(A) All of these
(B) Volume
(C) Temperature
(D) Pressure
11. . Specific heat at constant pressure is ……… specific heat at constant volume
(A) More
(B) Less
(C) Equal
(D) All
12. . Gas constant R is equal to ……… of two specific heats
(A) Difference
(B) Sum
(C) Product
(D) Ratio
13. . Pressure varies directly with temperature at constant volume. This is
(A) Gay Lussac’s law
(B) Boyle’s law
(C) Charles’s law
(D) Joule’s law
14. . State where evaporation is complete is
(A) Steam
(B) Perfect gas
(C) Vapour
(D) Air
15. . Change of internal energy proportional to temperature change is
(A) Boyle’s law
(B) Gay Lussac’s law
(C) Charles’s law
(D) Joule’s law
16. . Heating at constant pressure is governed by
(A) Boyle law
(B) Charles law
(C) Gay Lussac law
(D) Joule’s law