List of top Air Conditioning and Refrigeration Questions on Refrigeration Devices asked in CBSE CLASS XII

Give an example of an eco-friendly refrigerant and also write its properties.
Draw the labelled layout of a cold storage plant.
Write the properties of R-12.
What is a refrigerant? Give two examples.
The refrigerant R-22 is:
The refrigerant ammonia is:
The principle of evaporative cooling is not used in:
In a window air conditioner, ............ type of evaporator is used.
It starts operating when the pressure in the suction line falls below a pre-determined value:
The condenser used in a domestic refrigerator:
Thermostatic expansion valve operates by responding to ...........
Automatic expansion valve is also known as:
Dairy refrigeration includes:
The evaporator generally used in wine cooling is:
It starts operating when the pressure in the discharge line rises above a certain predetermined pressure.
Brine is used as a secondary refrigerant in:
It is a type of relay:
It is not a water cooled condenser: