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

Poultry meat is preserved by _________.
Which one among the following is not present in a household refrigerator ?
Heat is transfered in a metal rod heated at one end
Which one among the following is not a control device ?
An environment friendly refrigerant used in a household refrigerator is
H.P. cutout is essential in the refrigeration systems using ________.
In ice making, thawing of ice means
A grill provided with a damper or control valve is known as
The refrigerant R-11 is
The insulating material is best for domestic refrigerators is
The overload protector provides protection against the _________.
Addition of moisture to the air, without any change in its dry bulb temperature is known as
The evaporator which is commonly used in packaged air conditioner is
The psychrometric process generally used in heat pump :
Which one of the following is not a property of a thermal insulating material ?
Capillary tube is a type of _________.
Which is not the core component of central A.C. ?
For small cold storage, the rooms are cooled _________.
Which one among the following is not an equipment of cold storage plant ?
In a window air conditioner which one among the following types of condensers is used ?
This type of filter is not used in an air conditioning system :
The psychrometric process in which air is cooled and humidified but no heat is supplied or rejected is called ________.
How does the L.P. cutout protect the compressor ?
State the meaning of “Motivation”.
The mode of heat transfer by the actual movement of particles of the medium from one place to other is called ________.