Chemical Engineering Basics MCQs with answers Page - 6

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Q. The total frictional resistance to fluid flow does not depend upon the

  • (A) Fluid velocity
  • (B) Fluid density
  • (C) Fluid pressure
  • (D) Roughness of the surface

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Q. Which of the following is a unit of time ?

  • (A) Barn
  • (B) Angstrom
  • (C) Light year
  • (D) None of these

A

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Q. In extrusion of metals, which of the following statement is true ?

  • (A) Speed of the extruded material is same as that of ram speed
  • (B) Redundant work is a function of the die angle
  • (C) Hollow ram is used for indirect extrusion
  • (D) Relative motion between the billet surface and the container wall is always present

A

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Q. First empirical temperature scale conceived is the __________ temperature scale.

  • (A) Absolute
  • (B) Reaumer
  • (C) Celcius
  • (D) Farenhite

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Q. If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase.

  • (A) Convection
  • (B) Radiation
  • (C) Conduction
  • (D) Nucleate boiling

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Q. Pick out the wrong statement.

  • (A) Molecules with symmetrical arrangements are non-polar
  • (B) Generally, nonpolar compounds are chemically inactive, conduct electricity poorly and do not ionise
  • (C) Most of the hydrocarbons are non-polar
  • (D) None of these

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Q. Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

  • (A) Conductor
  • (B) Insulator
  • (C) Semi-conductor
  • (D) None of these

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Q. Alloys having more than 80% copper are generally more

  • (A) Abrasion resistant
  • (B) Corrosion resistant
  • (C) Prone to season cracking
  • (D) Machinable

A

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Q. Which of the following is not used as a fuel in rocket propellaht ?

  • (A) Liquid hydrogen
  • (B) Liquid oxygen
  • (C) Liquid hydrazine
  • (D) Kerosene oil

A

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Q. The stress at which a metal fails by fatigue lies

  • (A) Near the fracture point of the stress-strain curve
  • (B) In the plastic range
  • (C) In the elastic range
  • (D) None of these

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