Concrete Technology MCQs with answers Page - 61

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Q. The cement concrete prepared by mixing aluminium in it, is called ?

  • (A) air-entrained concrete
  • (B) cellular concrete
  • (C) aerated concrete
  • (D) any one of these

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Q. The type of lime used in lime concrete is ?

  • (A) fat lime
  • (B) poor lime
  • (C) slaked lime
  • (D) hydraulic lime

A

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Q. The aggregate is said to be flaky when ?

  • (A) its least dimension is three-fifth of its mean dimension
  • (B) its least dimension is equal to its mean dimension
  • (C) its length is equal to its mean dimension
  • (D) its length is equal to 1.8 times its mean dimension

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Q. The knowledge of a standard consistency of a cement paste is essential to perform ?

  • (A) setting time test
  • (B) soundness test
  • (C) compressive strength test
  • (D) all of these

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Q. The aggregate which pass through 75 mm IS sieve and entirely retain on 4.75 mm IS sieve is known as ?

  • (A) cyclopean aggregate
  • (B) coarse aggregate
  • (C) fine aggregate
  • (D) all-in-aggregate

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Q. Which of the following statement is correct? ?

  • (A) Sulphate resisting cement is particularly used for canal lining.
  • (B) Low heat cement should not be used for thin concrete structures
  • (C) Rapid hardening
  • (D) all of the above

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Q. The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is

  • (A) not needed
  • (B) provided equally on inner and front faces
  • (C) provided more on inner face than on front face
  • (D) provided more on front face than on inner face

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Q. Bulking of sand is maximum if moisture content is about

  • (A) 2 %
  • (B) 4 %
  • (C) 6 %
  • (D) 10 %

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Q. Diagonal tension in a beam

  • (A) is maximum at neutral axis
  • (B) decreases below the neutral axis and increases above the neutral axis
  • (C) increases below the neutral axis and decreases above the neutral axis
  • (D) remains same

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Q. According to IS: 4561978, the column or the strut is the member whose effective length is greater than

  • (A) the least lateral dimension
  • (B) 2 times the least lateral dimension
  • (C) 3 times the least lateral dimension
  • (D) 4 times the least lateral dimension

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