Chemical Engineering MCQs

Page No. 761

____________________ metal is used as a bearing liner material?


aPewter


bWhite


cBabbitt


dGun


View Answer Babbitt

Regeneration of molecular sieve requires it to be heated to a temperature of about __________________ °C?


a80-120


b200-300


c600-800


d1000-1100


View Answer 1000-1100

The ‘laughing gas’ is__________________?


aNitrous oxide


bNitric oxide


cNitrogen trioxide


dNitrogen pentoxide


View Answer Nitrous oxide

Heat transfer by ______________ is almost absent in case of fluidised bed drying operation?


aRadiation


bConduction


cConvection


dBoth B. & C.


View Answer Radiation

What is the range of tempering temperature (°C) for most of the materials ?


a75-100


b200-300


c350-450


d500-600


View Answer 200-300

Boiler draught of 10 mm water column is equivalent to_____________________?


a1 kgf/m2


b10 kgf/m2


c10 kgf/mm2


d1 kgf/mm2


View Answer 10 kgf/m2

Surface tension of a liquid_________________?


aIs due to intermolecular forces of cohesion


bDecreases with rise in temperature


cIs responsible for the spherical shape of an isolated liquid drop


dAll A, B. & C


View Answer All A, B. & C

Gas turbine normally employs a constant _______________ cycle?


aPressure


bTemperature


cVolume


dNone of these


View Answer Pressure

Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is calculated by the __________________ method?


aDiminishing balance


bSinking fund


cMultiple straight line


dSum of the years digit


View Answer Diminishing balance

An example of unsteady non uniform flow is the flow of liquid under pressure through a__________________?


aTapering pipe at constant flow rate


bTapering pipe at either decreasing or increasing flow rate


cLong pipeline of constant diameter


dNone of these



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