Engineering Thermodynamics - Practice Test

[#221] The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called

(A) Specific heat at constant volume

(B) Specific heat at constant pressure

(C) Kilo-Joule

(D) None of these

Correct Answer

(C) Kilo-Joule

[#222] In an isothermal process, the internal energy of gas molecules

(A) Increases

(B) Decreases

(C) Remain constant

(D) May increase/decrease depending on the properties of gas

Correct Answer

(C) Remain constant

[#223] The absolute zero pressure will be

(A) When molecular momentum of the system becomes zero

(B) At sea level

(C) At the temperature of - 273 K

(D) At the center of the earth

Correct Answer

(A) When molecular momentum of the system becomes zero

[#224] According to which law, all perfect gases change in volume by $${frac{1}{{273}}^{{ ext{th}}}}$$ of their original volume at 0°C for every 1°C change in temperature when pressure remains constant

(A) Joule's law

(B) Boyle's law

(C) Gay Lussac’s law

(D) Charle's law

Correct Answer

(D) Charle's law

[#225] Which of the following gas has a minimum molecular mass?

(A) Nitrogen

(B) Hydrogen

(C) Methane

(D) Oxygen

(E) Oxygen

(F) Nitrogen

(G) Hydrogen

(H) Methane

Correct Answer

(B) Hydrogen
(G) Hydrogen

Engineering Thermodynamics - Study Mode

[#221] The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called

Correct Answer

[#222] In an isothermal process, the internal energy of gas molecules

Correct Answer

[#223] The absolute zero pressure will be

Correct Answer

[#224] According to which law, all perfect gases change in volume by $${frac{1}{{273}}^{{ ext{th}}}}$$ of their original volume at 0°C for every 1°C change in temperature when pressure remains constant

Correct Answer

[#225] Which of the following gas has a minimum molecular mass?

Correct Answer