Building Materials MCQs with answers Page - 14

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Q. The initial setting of cement is caused due to due to ?

  • (A) di-calcium silicate
  • (B) tri-calcium silicate
  • (C) tri-calcium aluminate
  • (D) tri-calcium alumino ferrite

A

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Q. The rapid hardening Portland cement has a ?

  • (A) lower heat of hydration
  • (B) higher heat of hydration
  • (C) lower shrinkage coefficient
  • (D) higher shrinkage coefficient and higher heat of hydration

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Q. The silica in Portland cement should be ?

  • (A) 10 to 20%
  • (B) 20 to 25%
  • (C) 25 to 40%
  • (D) 40 to 60%

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Q. Igneous rock has ?

  • (A) crystalline, glossy or fused texture
  • (B) foliated structure which is hard and durable
  • (C) layers of different composition, colour and structure
  • (D) none of the above

A

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Q. A fine-grained granite ?

  • (A) offers higher resistance to weathering
  • (B) can be easily polished and worked
  • (C) is used for exterior facing of buildings
  • (D) all of these

A

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Q. The commonly used extender in a paint is ?

  • (A) barium sulphate
  • (B) gypsum
  • (C) alcohol
  • (D) any one of these

A

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Q. Spirit varnish consists of ?

  • (A) spirit and wax
  • (B) spirit and shellac
  • (C) turpentine, spirit and wax
  • (D) turpentine, spirit and shellac

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Q. The colour of granite is ?

  • (A) grey
  • (B) green
  • (C) brown
  • (D) all of these

A

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Q. When quarrying is to be done in hard stone and compact rocks, the usual method of quarrying ?

  • (A) by wedging
  • (B) by channelling machine
  • (C) by blasting
  • (D) all of these

A

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Q. Efflorescence is caused if ?

  • (A) the alkaline salt is present in the bricks
  • (B) the clay used for making bricks contain pyrite
  • (C) the water used for pugging the clay contains gypsum
  • (D) all of the above

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