Chemical Engineering MCQs

Page No. 54

Peroxyacetyl nitrate (PAN), a pollutant is found in the_________________?


aAutomobile exhaust


b Flue gas of coal based power plant


c Exhaust of nitric acid plant


dExhaust of sulphuric acid plant


View Answer Automobile exhaust

. Operating principle of cyclone separator is based on the action of _______________ dust particles?


aDiffusion of


bCentrifugal force on


cGravitational force on


dElectrostatic force on


View Answer Centrifugal force on

Green house effect is accentuated by________________?


aDeforestation


bRapid industrialisation


c Increased transportation activity


dAll A., B. and C.


View Answer All A., B. and C.

Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause___________________?


aExplosion


b Non biodegradable foam


cUndesirable plant growth


d Corrosion


View Answer Explosion

The widest explosive limit is of _____________, thereby making it the most explosive gas?


aAcetylene


bPetrol vapor


cHydrogen


dCarbon monoxide


View Answer Acetylene

Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for___________________?


aConversion of CO into CO2 in the second compartment


b Conversion of NOx into N2 and NH3 in the first compartment


cOxidation of unburnt hydrocarbon fuel in the second compartment


dAll A., B. and C.


View Answer All A., B. and C.

Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about ______________ decibels?


a20


b 60


c90


d120


View Answer 90

Smoke is produced due to__________________?


a Insufficient supply of combustion air and insufficient time for combustion


bPoor quality of fuel and improper mixing of fuel & combustion air


c Poor design & overloading of furnace


dAll A., B. and C.


View Answer All A., B. and C.

Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants ?


aNOx


bHg


cSO2


dF


View Answer SO2

80% less than 200 mesh size particles are called____________________?


aSmoke


bPowder


cGrit


dAggregates


View Answer Powder

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