Chemical Engineering MCQs

Page No. 388

____________ is the static characteristics of an instrument?


aResponse

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bTine lag

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cDrift

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dDynamic error

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View Answer Drift

Pick out the wrong statement ?


aO2, NO and NO2 exhibit paramagnetic properties as a result of unpaired electrons

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bCO2 is the strongest paramagnetic gas

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cParamagnetic susceptibility of gases decreases with temperature

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dParamagnetic susceptibility of gases permits the measurement of their concentration

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Process degree of freedom indicates _______________ number of controllers to be used?


aThe maximum

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bThe minimum

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cBoth maximum and the minimum

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dNothing about the

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View Answer The maximum

Thermal conductivity measurement com-prises the working principle of a_________________?


aCO2 analyser

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bPolarimeter

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cSpectrometer

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dChromatograph

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View Answer CO2 analyser

Which of the following is a ‘contact’ pyrometer ?


aResistance pyrometer

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bOptical pyrometer

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cRadiation pyrometer

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dInfra red pyrometer

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View Answer Resistance pyrometer

Which of the following is not a second order instrument ?


aMercury in glass thermometer with covering

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bBare mercury in glass thermometer

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cPressure gauge with one bellow, two tubes and a tank

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dNone of these

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The _____________ of a vapor pressure thermometer is a functioning element?


aPointer

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bBourdon tube

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cBulb

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dNone of these

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View Answer Pointer

Pirani gauge is used for the measurement of________________?


aVery high pressure

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bHigh vacuum

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cLiquid level under pressure

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dLiquid level at atmospheric pressure

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View Answer High vacuum

Zirconia probe is used for the measurement of___________________?


aHumidity of air

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b% CO2 in flue gas

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c% O2 in flue gas

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dSpeed of a submarine

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View Answer % O2 in flue gas

Volumetric expansion is the working principle of the ______________ thermometers?


aMercury in glass

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bConstant volume gas

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cVapor pressure

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dBimetallic

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View Answer Mercury in glass

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