When a vapour condenses into a liquid
A.It absorbs heat
B.It evolves heat
C.Its temperature rises
D.Its temperature drops
E.None of the above
Category: Heat Transfer Mcqs
If the roof of a house is painted with a shiny metallic paint, the temperature inside will
A.Rise
B.Fall
C.Remain unchanged
D.Depends on other factors
E.None of the above
Transient heat flow occurs in
A.Electric conductors carrying current
B.Insulated pipes carrying superheated steam
C.Cooling of casting
D.Heating and cooling of buildings due to sun
E.Melting of ice
The conditions under which three phases of matter can coexist in equilibrium, is known as
A.Absolute point
B.Basic point
C.Common point
D.Standard point
E.Triple point
Which of the following is a minimum boiling azeotrope?
A.Iso-butanol-water
B.Molasses-water
C.Carbon disulphide-acetone
D.Acetone-chloroform
E.Benzene-toluene
A wet solid is to be dried from 80% to 50% moisture (on wet basis). Calculate the moisture to be evaporated for 10 tonns of dried product?
A.375 kg
B.3750 kg
C.7500 kg
D.13,750 kg
E.37,500 kg
The unit of thermal diffusivity is
A.m/hr
B.m2/hr
C.m/hr?C
D.m2/hr?C
E.kcal/m2-hr
The process of removal of oil from oil cakes is known as
A.Leaching
B.Decoction
C.Osmosis
D.Soret effect
