Chemical Engineering MCQs

Page No. 194

Steady flow occurs, when the__________________?


aConditions change steadily with time

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bConditions are the same at the adjacent points at any instant

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cConditions do not change with time at any point

✓


dRate of the velocity change is constant

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A fluid gas produced on burning furnace oil contains 0.15 gm mole of CO2, 0.05 gm mole of oxygen and 0.80 gm mole of N2. What is its molecular weight ?


a28.6

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b30.0

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c 30.6

✓


d32.6

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View Answer 30.6

Euler’s equation of motion states, that at every point, the_________________?


aFluid momentum is constant

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bForce per unit mass equals acceleration

✓


cRate of mass outflow is equal to the rate of mass inflow

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dNone of these

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1 Kcal/kg. °C is equivalent to _______________ BTU/lb. °F ?


a1

✓


b2.42

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c4.97

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dNone of these

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View Answer 1

For the free settling of a spherical particle through a fluid, the slope of, CD-log NRe, plot is____________________?


a1

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b-1

✓


c0.5

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d-0.5

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View Answer -1

For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary_______________?


aDirectly as square of gas density

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bDirectly as gas density

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cDirectly as square root of gas density

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dInversely as gas density

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For the gaseous phase reaction, N2 + O2 ⇌ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by____________________?


aIncreasing the concentration of N2

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bDecrease in temperature

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c Increase in pressure

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dDecrease in pressure

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The discharge co-efficient for an orifice meter does not depend upon the ___________________?


aPipe length

✓


bRatio of pipe diameter to orifice diameter

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cType of orifice & the Reynolds number

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dPipe diameter

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View Answer Pipe length

Velocity at a certain point in case of streamline flow is_________________?


aConstant

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bIndependent of time

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cBoth A. & B.

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dNeither A. nor B.

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View Answer Both A. & B.

In _______________ process, ions of salts react with water to produce acidity or alkalinity ?


aHydration

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bHydrolysis

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c Electrolysis

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dDialysis

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View Answer Hydrolysis

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