Concrete Technology MCQs with answers Page - 24

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Q. Low heat cement contains more lime than ordinary Portland cement.

  • (A) True
  • (B) False
  • (C) ---
  • (D) ---

A

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Q. For concreting of tunnel lining, the concrete is transported by

  • (A) pumps
  • (B) pans
  • (C) wheel barrows
  • (D) containers

A

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Q. For the improvement of workability of concrete, the shape of aggregate recommended is

  • (A) irregular
  • (B) angular
  • (C) round
  • (D) flaky

A

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Q. For a structure subjected to the action of sea water, the cement used is

  • (A) rapid hardening cement
  • (B) low heat cement
  • (C) high alumina cement
  • (D) sulphate resisting cement

A

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Q. For high degree of workability, the slump value should vary between

  • (A) 0 to 25 mm
  • (B) 25 to 50 mm
  • (C) 50 to 80 mm
  • (D) 80 to 100 mm

A

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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 the above

A

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Q. Plain cement concrete is strong in taking

  • (A) tensile stress
  • (B) compressive stress
  • (C) shear stress
  • (D) all of these

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Q. As per IS : 459-1978, the concrete mixes are designated into

  • (A) 4 grades
  • (B) 5 grades
  • (C) 6 grades
  • (D) 7 grades

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Q. The factor which effect the quality of compaction, is

  • (A) density of concrete
  • (B) strength of concrete
  • (C) durability of concrete
  • (D) all of these

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Q. The top diameter, bottom diameter and height of the mould used for slump test are respectively

  • (A) 100 mm, 200 mm, 300 mm
  • (B) 200 mm, 100 mm, 300 mm
  • (C) 200 mm, 300 mm, 100 mm
  • (D) 100 mm, 300 mm, 200 mm

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