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.Management Sciences
Category: Stoichiometry
Recycling in a chemical process facilitates___________________?
A. Increased yield
B. Enrichment of product
C. Heat conservation
D. All A., B. & C.
Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half will result in _____________ in the volume of the gas?
A. No change
B. Doubling
C. 1/4th reduction
D. Fourfold increase
The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol XM satisfies________________?
A. XM < 0.5
B. XM = 0.5
C. 0.5 < XM < 0.64
D. XM ≥ 0.64
Which of the following is not a unit of kinematic viscosity ?
A. Poise
B. Stoke
C. cm2/second
D. None of these
The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour________________?
A. Measures the elevation in boiling point
B. Is not dependent on the temperature
C. Is a function of the liquid phase composition
D. Measures the depression in freezing point
Pick out the wrong statement ?
A. ‘Reduced temperature’ of a substance is the ratio of its existing temperature to its critical temperature, both expressed on Celsius scale
B. ‘Reduced pressure’ is the ratio of the existing pressure of a substance to its critical pressure
C. ‘Reduced volume’ is the ratio of the existing molal volume of a substance to its critical molal volume
D. None of these
Pick out the wrong unit conversion of calorific value?
A. 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg
B. 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3
C. 1 BTU/lb = 2.3 kcal/kg
D. 1 kcal/m3 = 0.1124 BTU/ft3
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