Category: CHEMICAL ENGINEERING
The combustion reaction, C + O2 = CO2, is ___________________?
A. Exothermic
B. Endothermic
C. Autocatalytic
D. None of these
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
For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a__________________?
A. Large area but small mass
B. High thermal conductivity
C. Small specific heat
D. All A , B & C
Reaction of an alcohol with organic acid is called the ________________ reaction?
A. Saponification
B. Esterification
C. Neutralisation
D. Acidification
Dorr thickener is an equipment used for______________________?
A. Classification
B. Sedimentation
C. Clarification
D. Leaching
Ponchon-Savarit method analyses the fractional equipment based on___________________?
A. Enthalpy balance only
B. Material balance only
C. Both enthalpy and material balances
D. The assumption of constant molal-overflow
Mass transfer rate between two fluid phases does not necessarily depend on the ______________ of the two phases?
A. Chemical properties
B. Physical properties
C. Degree of turbulence
D. Interfacial area
Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) ?
A. Acts as a green house gas thereby raising earth’s temperature
B. Causes asphyxia
C. Causes increase in sea level
D. Enhances the green house effect
Metallic soap is ________________ salt of fatty acids ?
A. Sodium
B. Potassium
C. Both sodium & potassium
D. Aluminium or calcium
For a binary mixture with low relative volatility___________________?
A. Use steam distillation
B. Use molecular distillation
C. Use high pressure distillation
D. An azeotrope may be formed during distillation
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