Chemical Engineering Basics MCQs

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1.At approximately what temperature range must a molecular sieve be heated to regenerate it effectively?

Between 80 and 120 °CFrom 200 to 300 °CIn the range of 600 to 800 °CAround 1000 to 1100 °C

2.Which compound is commonly known as 'laughing gas'?

Nitrous oxideNitric oxideNitrogen trioxideNitrogen pentoxide

3.In fluidized bed drying processes, which mode of heat transfer is nearly negligible?

4.What temperature range (in °C) is commonly used for tempering the majority of materials?

75 to 100200 to 300350 to 450500 to 600

5.What is the equivalent pressure of a boiler draught measuring 10 mm of water column?

1 kilogram-force per square meter10 kilograms-force per square meter10 kilograms-force per square millimeter1 kilogram-force per square millimeter

6.What causes the surface tension observed in liquids?

It results from cohesive intermolecular forcesIt reduces as the temperature increasesIt leads to the round shape of a solitary liquid dropletAll of the above statements are true

7.Which type of thermodynamic cycle does a gas turbine typically operate on?

Constant pressureConstant temperatureConstant volumeNo specific cycle

8.Under income tax laws, which method is used to compute depreciation on machinery classified as indirect expenses?

Diminishing balance methodSinking fund approachMultiple straight-line techniqueSum-of-the-years-digits method

9.Which of the following best illustrates unsteady non-uniform flow of a liquid under pressure?

A pipe with varying diameter carrying fluid at a steady flow rateA pipe with changing diameter experiencing either an increasing or decreasing flow rateA lengthy pipeline with a fixed diameterNone of the above

10.Which type of loading requires a material to possess high resilience?

11.When insulating a steam pipe with two layers of materials having different thermal conductivities, how should the layers be arranged to minimize heat loss?

Place the material with superior insulating properties closest to the pipe surface.Position the better insulating material on the outermost layer.Either insulating material can be installed on the inside or outside without affecting heat loss.The choice of insulating material placement depends primarily on the steam temperature.Use identical materials for both layers to ensure uniform insulation.

17.Given that the fugacity of liquid water at 298 K is about 3171 Pa and the ideal heat of vaporization is 43723 J/mol, what would be the approximate fugacity of liquid water at 300 K?

Chemical Engineering Basics MCQs

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1.At approximately what temperature range must a molecular sieve be heated to regenerate it effectively?

2.Which compound is commonly known as 'laughing gas'?

3.In fluidized bed drying processes, which mode of heat transfer is nearly negligible?

4.What temperature range (in °C) is commonly used for tempering the majority of materials?

5.What is the equivalent pressure of a boiler draught measuring 10 mm of water column?

6.What causes the surface tension observed in liquids?

7.Which type of thermodynamic cycle does a gas turbine typically operate on?

8.Under income tax laws, which method is used to compute depreciation on machinery classified as indirect expenses?

9.Which of the following best illustrates unsteady non-uniform flow of a liquid under pressure?

10.Which type of loading requires a material to possess high resilience?

11.When insulating a steam pipe with two layers of materials having different thermal conductivities, how should the layers be arranged to minimize heat loss?

12.What is the main reason for adding lead to 60:40 brass alloy?

13.Which of the following substances reacts with glass?

14.For a fixed heat flow and identical thickness, which material experiences the greatest temperature decrease?

15.Which substance can transition directly from a gas to a solid without passing through the liquid phase?

16.Cold heading, also known as upsetting, falls under which type of manufacturing process?

17.Given that the fugacity of liquid water at 298 K is about 3171 Pa and the ideal heat of vaporization is 43723 J/mol, what would be the approximate fugacity of liquid water at 300 K?

18.Which metal is found in the greatest quantity within the Earth's crust?

19.What type of load is applied to a material when testing its endurance strength?

20.The notched bar test is primarily conducted to evaluate which property of a material?

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