The two specific heats at constant pressure and at constant volume are equal at
A.0?C
B.0 K
C.0?F
D.0?R
Category: Chemical Engineering Mcqs
Ethanol-water solution containing 50 mole per cent ethanol can be separated to get 97 mole per cent ethanol by
A.atmospheric distillation
B.distillation at higher pressures
C.vacuum distillation
D.all of the above
In wet process (strong sulphuric acid leaching) for the manufacture of orthophosphoric acid the dilute orthophoric acid (40%) is obtained from travelling pan vacuum filter. The dilute orthophosphoric acid (50%) is concentrated economically 75% orthophosphoric acid by using
A.an evaporator
B.a distillation column
C.an extractor
D.an adsorption column
A tube of length h which is wide enough to make surface tension effects negligible is closed at one end. It is then lowered into a tank of mercury of depth h and the mercury rises to a distance x into the tube. If the mercury barometer stands at h also then
A.(2h-x) (h-x) = h2
B.h(h-x) = h2
C.(2h-x) (h+x) = h2
D.2h(h-x) = h2
If 92U238 emits one alpha particle the remaining nucleus will contain
A.234N + 90P
B.236N + 88P
C.144N + 90P
D.145N + 93P
The dimensions of thermal conductivity are
A.MLT?3
B.MLT2 ?2
C.MLT-3 ?-1
D.ML-1T2 ?
The most reactive allotropic form of phosphorus is
A.red phosphorus
B.yellw phosphorus
C.black phosphorus
D.violet phosphorus
The operating pressure in kgf/cm2 of electrical desalters is about
A.10
B.1
C.0.7
D.50
Mercaptans are low boiling
A.sulphur compounds
B.oxygen compounds
C.nitrogen compounds
D.organometallic compounds
