chemical engineering MCQs – Page 342

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 Review each marked answer and report any item that may be outdated or unclear.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
6821. Which one has the maximum tensile strength out of the following ?
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A. Pig iron

B. Grey cast iron

C. White cast iron

D. Nodular cast iron
6822. High carbon steel contains more than _____________ percent carbon?
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A. 2.5

B. 2.2

C. 2.8

D. 0.5
6823. The hardest material just prior to diamond in Mhos scale is_________________?
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A. Calcite

B. Topaz

C. Corundum

D. Carborundum

6824. Which is the purest form of iron ?
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A. Grey iron

B. Bessemer iron

C. Wrought iron

D. Pig iron

6825. Monel metal is an alloy of__________________?
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A. Molybdenum and zinc

B. Molybdenum and aluminium

C. Molybdenum and nickel

D. Nickel and copper
6826. Which of the following valves will incur maximum pressure drop for the same discharge of water ?
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A. Butterfly valve

B. Needle valve

C. Globe valve

D. Gate valve

6827. Dry chlorine can be handled in a vessel made of__________________?
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A. Nickel

B. Brass

C. Iron or steel

D. PVC

6828. Rotary kilns in cement industry are lined with _____________bricks?
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A. Lead

B. Silica

C. High alumina & high magnesia

D. Fireclay

6829. In SO3 absorber (Contact Process), packing material used is of________________?
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A. Cast iron

B. Chemical stoneware

C. Karbate

D. Mild steel

6830. Polymorphism is not exhibited by______________________?
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A. Phosphorous

B. None of these

C. Carbon

D. Iron

6831. Which of the following is an undesirable property of a manometric liquid ?
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A. Low viscosity & surface tension

B. Non-sticky & non-corrosive nature

C. High vapour pressure

D. Low co-efficient of thermal expansion

6832. Foot valve provided in the pump is a ______________ valve?
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A. Relief

B. Back pressure

C. Direction control

D. Pressure reduction

6833. How many molecules per unit cell are there in a face centred cubic lattice ?
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A. 8

B. 2

C. 4

D. 6

6834. Maximum consumption of lead is in the manufacture of _________________________?
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A. Storage batteries

B. Electric cable sheathing

C. Lead lined vessels

D. Solder alloys

6835. Which of the following has no effect on the carbide forming tendency in steels ?
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A. Phosphorus

B. Vanadium

C. Molybdenum

D. Chromium

6836. Capillary tube method of viscosity measurement is based on the ________________?
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A. Navier-stokes equation

B. Hagen-Poiseuilles equation

C. None of these

D. Stokes law

6837. Turbine impeller____________________?
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A. Is effective over wide range of viscosities

B. Does not produce tangential current

C. Produces only tangential current

D. Produces only radial current

6838. Inconel is an alloy of_________________?
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A. Copper and nickel

B. Copper and tin

C. Iron, nickel and chromium

D. Tin, zinc and nickel

6839. Venturimeter and orificemeter measures the _____________ of the fluid?
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A. Average velocity

B. Point velocity

C. Maximum velocity

D. Pressure

6840. Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump ?
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A. Either of A., B. or C.

B. Increasing the number of vanes in the impeller

C. Increasing the impeller speed and the volute area

D. Mounting of two or more impellers in series on a single shaft