Chemical Engineering MCQs

6108 MCQs (Page 75 of 611)

Attempt Chemical Engineering Quiz

While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterized by the ?

A. Low impact strength
B. High flexibility
C. Better finish and surface appearance
D. High plastic deformation

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Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother ?

A. Cresylic acid
B. Xanthaies
C. Pine oil
D. All a, b. & c.

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Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be________________?

A. 9.5 : 1
B. 12.5 : 1
C. 15.5 : 1
D. 18.5 : 1

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Which of the following phenomenon/ phenomena is/are diffusion controlled ?

A. Dislocation climb
B. Cross-slip
C. Twinning
D. Recrystallisation

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Common salt is produced from sea water in India generally by the ________________ method?

A. Freeze drying
B. Solar evaporation
C. Electrolytic
D. None of these

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The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ?

A. T
B. 1/t
C. T2
D. 1/t2

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‘Flare tower’ used in industry is meant for_____________________?

A. Venting off (after burning) the excess inflammable/toxic gases at high pressure
B. Absorbing the pollutant gases from the furnace exhaust
C. Cooling of furnace exhaust gases
D. None of these

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Solute atoms which cause yield point phenomenon in mild steel are/is_________________?

A. Aluminium
B. Boron
C. Carbon
D. Nitrogen

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Heat required to raise the temperature of a body by 1 °C is called its_______________?

A. Heat capacity
B. Specific heat capacity
C. Thermal conductivity
D. Water equivalent

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Liquor poisoning generally occurs due to the presence of _______________ in it?

A. Ethyl alcohol
B. Impurities
C. Methyl alcohol
D. Carbonic acid

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