Unit 1 Thermodynamics Quiz

Amount of energy required to raise the temperature of a substance of 1 Kg mass by 1⁰C is called

• Specific entropy

• Specific heat capacity

• Sensible heat

• Latent Heat

Which of the following is not a thermodynamical variable

• Temperature

• Volume

• Entropy

• height

If the temperature of the source is increased, the efficiency of carnot heat engine

• Increases

• Decreases

• Remains constant

• First increases then becomes constant

The distance travelled by an atom between two successive collisions is called

• Wavelength

• Displacement

• Free path

• Mean free path

In which thermodynamic process is there no flow of heat between the system and the surroundings.

• Isobaric

• Isothermic

• Adiabatic

• Isochoric

An open system

• A.Is a specified region where transfers of energy and/or mass take place

• B.Is a region of constant mass and only energy is allowed to cross the boundaries

• C.Cannot transfer either energy or mass to or from the surroundings

• D.Has a mass transfer across its boundaries, and the mass within the system is not necessarily constant

• E.None of the above

An ideal heat engine operates in Carnot's cycle between 227 degree C and 127 C. it absorbs 6 x 10 ^4 J at high temperature. The amount of heat converted into work is

• 4.8 x 10^4 J

• 3.5 x 10^4 J

• 1.6 x 10^4 J

• 1.2 x 10^4 J

Which of the following is true according to Clausius statement?

• it is possible to construct a device that can transfer heat from a cooler body to a hotter body without any effect

• it is impossible to construct a device that can transfer heat from a cooler body to a hotter body without any effect

• it is impossible to construct a device that can transfer heat from a hotter body to a cooler body without any effect

• none of the mentioned

What state of matter is X?

• solid 
• liquid
• gas
• supercritical fluid

The thermodynamic process which occurs at constant pressure is

• isothermal

• Isochoric

• Isomeric

• Isobaric