Chemical Engineering Basics MCQ Questions & Answers

21

Which of the following is the most wear resistant grade of carbide used for the cutting tools?

A) Aluminium carbide B) Tungsten carbide C) Nickel carbide D) Iron carbide

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Answer & Solution

Answer: Option B

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22

In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that

A) Compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller B) Maintaining vacuum on tube side is more difficult than that on the shell side C) Water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam D) Condenser can act as a storage unit for condensed steam

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Answer & Solution

Answer: Option C

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23

Pick out the wrong statement.

A) In a thin spherical shell under internal pressure, hoop stress is equal to the half of axial stress B) Thermoplastic material does not follow Hooke's law of elasticity C) Components under longitudinal compression is called 'struts' and the load under which strut fails is called crippling or buckling load D) At low temperatures (sub-zero) in pressure vessels, the ductility of metal diminishes and brittle fracture occurs while at high temperature in pressure vessels, embrittlement of material may take place

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Answer & Solution

Answer: Option A

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24

Stainless steel is welded with difficulty because of

A) Its high melting temperature B) Chances of cracking C) Oxide film formation D) Chromium carbide formation

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Answer: Option C

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25

Which of the following properties of a solid is not dependent on crystal imperfection?

A) Ductility B) Semiconductivity C) Melting point D) Yield stress

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Answer & Solution

Answer: Option C

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26

Identify the correct statement.

A) Sphlerite is zinc oxide B) The first law of the thermodynamics is stated as δE = δQ - δW C) Lead can be produced in a blast furnace D) T. ferrooxidans is a fungus that can be used for leaching chalcopyrite

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Answer & Solution

Answer: Option C

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27

Desalination of water

A) Makes it potable B) Makes it non-potable C) Means distillation of water D) None of these

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Answer & Solution

Answer: Option A

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28

Dew point of air indicates its

A) Moisture content B) Dryness C) Latent heat D) Coolness

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Answer & Solution

Answer: Option A

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29

Copper deposits are found in India at the following location:

A) Kudremukh B) Kolar C) Khetri D) Ramagundam

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Answer: Option C

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30

__________ remains constant during the adiabatic cooling of moist air.

A) Wet bulb temperature B) Dry bulb temperature C) Relative humidity D) Specific humidity

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Answer & Solution

Answer: Option A

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering