Which of the following is not a colligative property ?

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Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of ________________?

A. Fireclay B. Silicon carbide C. Corundum D. Siliceous fireclay...

Dry air is a mixture of__________________?

A. Vapors B. Gases C. Both A. & B. D. Neither A. nor B....

An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture ?

A. Cork B. Saw dust C. Sand D. Chemically prepared foam...

Pick out the wrong unit conversion of thermal conductivity ?

A. 1 BTU/ft2.hr.°F/ft = 1.488 kcal/m2. hr.°C/m B. 1 BTU/ft2.hr.°F/inch = 1.488 kcal/m2. hr.°C/m C. 1 kcal/m.hr.°C = 0.672 BTU/ft.hr.°F = 1.163 W/m. °K D. 1 W/cm.°C = 85.985 kcal/m.hr.°C = 57.779 BTU/ft.hr.°F...

A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?

A. 17 B. 20 C. 25 D. 34...