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.Management Sciences
Category: Stoichiometry
The heat capacity of most substances is greater for the _______________ state?
A. Solid
B. Liquid
C. Gaseous
D. None of these
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is___________________?
A. Less than 100°C
B. 100°C
C. Between 100 and 110°C
D. 110.6°C
Pick out the wrong unit conversion of heat transfer co-efficient?
A. 1 kcal/m2.hr.°C = 0.2048 BTU/ft2.hr. °F. = 1.163 W/m2.°K
B. 1 kcal/m2.hr.°K = 1.163 W/m2.°C
C. 1 W/m2.°C = 0.1761 BTU/ft2.hr.°F.
D. 1 BTU/ft2.hr.°F = 4.88 kcal/m2.hr.°C = 20.44 kJ/m2.hr°C = 5.678 W/m2.°C
The vapor pressure of liquids of similar chemical nature at any particular temperature _______________ with increase in the molecular weight?
A. Increases
B. Decreases
C. Remains unchanged
D. Either A. or B.; depends on the liquid
For the gaseous phase reaction, N2 + O2 ⇌ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by____________________?
A. Increasing the concentration of N2
B. Decrease in temperature
C. Increase in pressure
D. Decrease in pressure
The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is_____________________?
A. Termed as relative saturation
B. Not a function of the composition of gas mixture
C. Called percentage saturation
D. Not a function of the nature of vapor
Pure oxide refractories are generally monocrystalline in nature and are self bonded ______________ bricks are generally used as moderator in nuclear reactors?
A. Beryllia
B. Carborundum
C. Corundum
D. Thoria
Kopp’s rule is concerned with the calculation of__________________?
A. Thermal conductivity
B. Heat capacity
C. Viscosity
D. Surface tension
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