THERMODYNAMICS

The first law of thermodynamics is the law of ________.

• conservation of mass

• conservation of energy 

• conservation of heat 

• conservation of temperature

Carnot cycle has maximum efficiency for _________.

• reversible engine 

• irreversible engine 

• petrol engine

• diesel engine

First law of thermodynamics ____________

• enables to determine change in internal energy of the system 

• does not help to predict whether the system will or not undergo a change 

• does not enable to determine change in entropy 

• provides relationship between heat, work and internal energy

• all of the above

Total heat of a substance is also known as _______.

• internal energy

• entropy

• thermal capacity

• enthalpy

First law of thermodynamics furnishes the relationship between _______.

• heat and work 

• heat, work and properties of the system

• various properties of the system various

• heat and internal energy.

The 0th Law of Thermodynamics states _________.

• Heat flows from hot to cold objects.

• The universe tends toward disorder

• Absolute zero is the temperature where particles stop moving

• Heat does not flow between objects with the same temperature

Objects with higher temperatures have _______.

• particles with no kinetic energy

• particles with higher average kinetic energy

• particles with lower average kinetic energy

• more thermal energy no matter what

Thermal equilibrium is _________.

• When one object is colder than another

• When substances that can exchange heat reach the same temperature.

• When one object is hotter than another

• When substances have equal amounts of internal energy

Heat always flows from _____ to _____.

• higher temperatures, lower temperatures

• less internal energy, more internal energy

• lower temperatures, higher temperatures

• more internal energy, less internal energy

What is the kinetic energy of all particles at absolute zero?

• cannot be determined

• 0 K

• Infinite energy

• 0 J