List of top Air Conditioning and Refrigeration Questions asked in CBSE Class Twelve Board Exam

Draw the labelled layout of a cold storage plant.
Describe the importance of an overload protector with the help of a diagram.
Explain the ‘Radial Perimeter’ duct system with the help of a diagram.
Give an example of an eco-friendly refrigerant and also write its properties.
Write the properties of R-12.
What main points must be kept in view while designing the air distribution system of an air conditioning system?
Explain the Unitary air conditioning system.
Describe the process of ‘Chemical dehumidification’.
Describe the psychrometric process used for ‘summer air conditioning’.
Describe the preservation of meat products.
Differentiate between Blower and Exhauster.
What do you understand by ‘Heat Transfer’? Write the different modes of heat transfer.
What is a refrigerant? Give two examples.
The relay which is connected in series with the running winding is:
In ‘Shell and Tube’ condenser:
Write some components of a spreadsheet.
This insulating material operates best in the temperature range of \(-200^\circ C\) to \(150^\circ C\) :
The refrigerant R-22 is:
The air supplied to the conditioned space is made free from all foreign matters such as dirt, fumes, smoke and harmful bacteria by ..............
The refrigerant ammonia is:
The fan which removes air or gases from a space by suction is:
In a window air conditioner, ............ type of evaporator is used.
Which one of the following is not an air conditioning system?
The passage carrying conditioned air to the conditioned space is known as:
The principle of evaporative cooling is not used in: