Building Materials MCQs with answers Page - 7

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Q. The time required for air seasoning of soft wood is ?

  • (A) 60 to 90 days
  • (B) 15 to 30 days
  • (C) 90 to 120 days
  • (D) 30 to 60 days

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Q. Linseed oil in paint is used as a ?

  • (A) batten
  • (B) thinner
  • (C) base
  • (D) carrier

A

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Q. The liquid part of the paint is called ?

  • (A) vehicle
  • (B) solvent
  • (C) drier
  • (D) pigment

A

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Q. The specific gravity of stone should not, in any case, be less than ?

  • (A) 2.5
  • (B) 1
  • (C) 1.5
  • (D) 2

A

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Q. According to Indian standard specifications, the concrete should be cured under a humidity ?

  • (A) 90%
  • (B) 70%
  • (C) 30%
  • (D) 50%

A

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Q. The liquid medium used in enamel paints is ?

  • (A) varnish
  • (B) thinner
  • (C) alcohol
  • (D) turpentine

A

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Q. Enamel paint is made by adding ?

  • (A) white lead in lacquer
  • (B) white lead in varnish
  • (C) bitumen in varnish
  • (D) zinc white in spirit A

A

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Q. In order to dry the quarry sap of a freshly quarried stone, it should be exposed to open air for period of ?

  • (A) four months
  • (B) one month
  • (C) two years
  • (D) six to twelve months

A

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Q. A first class brick should not absorb water more than................. of its own dry weight after 24 hours immersion in cold water ?

  • (A) 5%
  • (B) 10%
  • (C) 15%
  • (D) 20%

A

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Q. For R.C.C. construction, the maximum size of coarse aggregate is limited to ?

  • (A) 25 mm
  • (B) 20 mm
  • (C) 10 mm
  • (D) 15 mm

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