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.Management Sciences
Category: Stoichiometry
Kopp’s rule is concerned with the calculation of__________________?
A. Thermal conductivity
B. Heat capacity
C. Viscosity
D. Surface tension
Gases having same reduced temperatures and reduced pressures_________________?
A. Deviate from ideal gas behaviour to the same degree
B. Have nearly the same compressibility factor
C. Both A. and B.
D. Neither A. nor B.
The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of_________________?
A. Formation
B. Solution
C. Combustion
D. Fusion
The temperature of a gas in a closed container is 27° C. If the temperature of the gas is increased to 300° C, then the pressure exerted is___________________?
A. Doubled
B. Halved
C. Trebled
D. Unpredictable
Saturated molal absolute humidity of the vapor-gas mixture depends upon the______________________?
A. Vapor pressure at dry bulb temperature
B. Total pressure
C. Both A. and B.
D. Neither A. nor B.
With increase in the alumina content, the refractoriness of high alumina refractories_________________?
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease
Avogadro’s number is equal to__________________?
A. 6.023 × 1023 molecules/kg.mole
B. 6.023 × 1023 molecules/gm.mole
C. 6.023 × 1016 molecules/kg.mole
D. 6.023 × 1026 molecules/gm.mole
An ideal gas can be liquefied, because ___________________?
A. Its molecular size is very small
B. Its critical temperature is more than 0°C
C. Forces operative between its molecules are negligible
D. It gets solidified directly without becoming liquid
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