150) Sulphur dioxide has the lowest boiling point.

151) For a given dry bulb temperature, as the relative humidity __________ the wet bulb temperature will increase.

152) The lowest thermal diffusivity is of

153) A low wet bulb temperature indicates very __________ humidity.

154) The operating temperature of a cold storage is - 2 Degree Centigrade. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40 Degree Centigrade. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant workin