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.Management Sciences
Category: Stoichiometry
In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is__________________?
A. Independent of temperature
B. Increases with rise in pressure
C. Increased with decrease in pressure
D. Unchanged with pressure changes
Which of the following ratios defines the recycle ratio in a chemical process ?
A. Gross feed stream/recycle feed stream
B. Recycle stream/fresh feed stream
C. Recycle stream/gross feed stream
D. None of these
Pick out the wrong statement?
A. Insulating refractories used in place of regular refractory bricks are usually called light weight refractories, and they have similar composition as heavy bricks
B. Graphite refractories are also called plumbago refractories
C. Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28
D. Calcined magnesite is also called dead burnt magnesite
Volume occupied by one gm mole of a gas at S.T.P. is ____________________?
A. 22.4 litres
B. 22400 litres
C. 22.4 c.c
D. 359 litres
In _______________ process, ions of salts react with water to produce acidity or alkalinity ?
A. Hydration
B. Hydrolysis
C. Electrolysis
D. Dialysis
Heat of ____________ of a fuel is called its calorific value?
A. Formation
B. Combustion
C. Reaction
D. Vaporisation
The vapour pressure of a solution (made by dissolving a solute in a solvent) is ____________ that of the pure solvent?
A. Less than
B. More than
C. Equal to
D. Either more or less; depends on the solvent
Pick out the wrong unit conversion of mass transfer co-efficient?
A. 1 lb/hr.ft3.atm. = 4.8182 kg/hr.m2.bar
B. 1 kg/hr.m2.atm= 0.98687 kg/hr. m .bar
C. 1 lb/hr.ft2 = 4.8823 kg/hr.m2
D. 1 kg/hr.m2 = 4.8823 lb/hr.ft2
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