chemical engineering MCQs – Page 216

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs

4301. A gas at 0C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be_______________?
0

A. -136.5C

B. 0K

C. 136.5K

D. -273C

4302. With increase in the porosity, thermal spalling resistance of fireclay brick_______________?
0

A. Decreases

B. May increase or decrease

C. Increases

D. Remain same

4303. In case of vapor-liquid equilibria, which of the following does not account for gas phase deviation from ideality ?
0

A. None of these

B. Use of equation of state

C. Fugacity co-efficient

D. Activity co-efficient

4304. _____________ paint has the minimum absorption co-efficient?
0

A. Light cream

B. Black

C. White lead

D. Grey

4305. Which of the following is correct ?
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A. Resistance = Driving force Rate

B. Rate = Driving force Resistance

C. Driving force = Rate Resistance

D. Rate = Resistance/Driving force

4306. Refractory bricks having lower porosity have _____________________?
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A. Low heat capacity

B. Greater strength

C. Low thermal conductivity

D. High insulating properties

4307. Boiling point of a non-homogeneous mixture of immiscible liquids is _____________ that of any one of its separate components?
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A. Lower than

B. Either A. or B.; depends on the liquids

C. Equal to

D. Higher than

4308. Fireclay bricks are not used in the________________?
0

A. Coke oven regenerators

B. By-product coke oven walls

C. Combustion chamber of B.F. stoves

D. Beehive coke oven

4309. Pure oxide refractories are generally monocrystalline in nature and are self bonded ______________ bricks are generally used as moderator in nuclear reactors?
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A. Corundum

B. Beryllia

C. Carborundum

D. Thoria

4310. API gravity of water at N.T.P. is about__________________?
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A. 10

B. 0

C. 100

D. 1

4311. Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is_______________?
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A. 3

B. 2

C. 0

D. 1

4312. jH factor for heat transfer is not a function of the _______________ number?
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A. Reynolds

B. Nusselt

C. Grashoff

D. Both B. & C.

4313. For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area___________________?
0

A. Increases

B. Passes through a maxima

C. Decreases

D. Remain constant

4314. Pick out the wrong statement ?
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A. Propagation velocity for travel of heat radiation through vacuum is equal to the velocity of the light

B. The amount of heat involved in the condensation or vaporisation of 1 kg of a fluid is the same

C. Heat transfer by radiation cannot occur across an absolute volume

D. In case of a shell and tube heat exchanger, the pressure drop through the shell is proportional to the number of times the fluid crosses the bundle between baffles

4315. Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the____________________?
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A. Minimum resistance presents in the series

B. Maximum resistance in the series

C. Average of all resistances

D. Sum of all resistances

4316. Duhring?s rule is important in solving problems on__________________?
0

A. Evaporation

B. Humidification

C. Distillation

D. Crystallisation

4317. The density of a liquid is 1500 kg/m3. Its value in gin/litre will be equal to________________?
0

A. 1500