Engineering Materials MCQs with answers Page - 1

Here, you will find a collection of MCQ questions on Engineering Materials. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Addition of manganese to aluminium results in

  • (A) improvement of casting characteristics
  • (B) improvement of corrosion resistance
  • (C) one of the best known age and precipitation-hardening systems
  • (D) improving machinability

A

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Q. Addition of lead and bismuth to aluminium results in

  • (A) improvement of casting characteristics
  • (B) improvement of corrosion resistance
  • (C) one of the best known age and precipitation-hardening systems
  • (D) improving machinability

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Q. Addition of copper to aluminium results in

  • (A) improvement of casting characteristics
  • (B) improvement of corrosion resistance
  • (C) one of the best known age and precipitation-hardening systems
  • (D) improving machinability

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Q. Acidic solution is one which has pH value

  • (A) greater than 7
  • (B) less than 7
  • (C) equal to 7
  • (D) pH value has nothing to do with neutral solution

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Q. A specimen of aluminium metal when observed under microscope shows

  • (A) B.C.C. crystalline structure
  • (B) F.C.C. crystal structure
  • (C) H.C.P. structure
  • (D) a complex cubic structure

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Q. A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

  • (A) allotropic change
  • (B) recrystallisation
  • (C) heat treatment
  • (D) precipitation

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Q. A reversible change in the atomic structure of steel with corresponding change in the properties is known as

  • (A) molecular change
  • (B) physical change
  • (C) allotropic change
  • (D) solidus change

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Q. A material is known as allotropic or polymorphic if it

  • (A) has a fixed structure under all conditions
  • (B) exists in several crystal forms at different temperatures
  • (C) responds to heat treatment
  • (D) has its atoms distributed in a random pattern

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Q. ‘Killed steels’ are those steels

  • (A) which are destroyed by burning
  • (B) which after their destruction are recycled to produce fresh steel
  • (C) which are deoxidised in the ladle with silicon and aluminium
  • (D) in which carbon is completely burnt

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