Building Materials MCQs with answers Page - 12

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Q. The advantage of adding pozzolana (or surkhi) to lime is to ?

  • (A) reduce shrinkage
  • (B) increase resistance to cracking
  • (C) increase resistance to chemical attack
  • (D) all of these

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Q. The setting and hardening of cement paste is mainly due to the hydration and hydrolysis of ?

  • (A) tri-calcium silicate
  • (B) di-calcium silicate
  • (C) tri-calcium aluminate
  • (D) all of these

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Q. Le-chatelier method is used to determine ?

  • (A) initial setting of cement
  • (B) fineness of cement
  • (C) soundness of cement
  • (D) normal consistency of cement

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Q. Granite is mainly composed of ?

  • (A) quartz and mica
  • (B) felspar and mica
  • (C) quartz and felspar
  • (D) quartz, felspar and mica

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Q. Which of the following statement is correct ?

  • (A) The sand used for making mortar should be fine
  • (B) The rounded grains of sand produce a strong mortar
  • (C) The mortar made with coarse sand is stronger than the one made with fine stand
  • (D) all of the above

A

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Q. The workability of cement concrete can be improved by ?

  • (A) increasing the quantity of cement
  • (B) increasing the proportion of coarse aggregate
  • (C) increasing the quantity of sand
  • (D) all of the above

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Q. The attrition test on stones is performed ?

  • (A) to determine the crushing strength of the stone
  • (B) for assessing the resistance of stone to the sun, rain, wind etc
  • (C) to ascertain the stability of the stone when exposed to acid fumes
  • (D) for determining the rate of wear of stone due to grinding action under traffic

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Q. The bricks after moulding should be dried in ?

  • (A) open air
  • (B) sun for 3 to 8 days
  • (C) air for 3 to 8 days but not in sun
  • (D) hot air for 3 days

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Q. The hydraulic lime which resembles very much with Portland cement in its chemical composition is called ?

  • (A) feebly hydraulic lime
  • (B) moderately hydraulic lime
  • (C) eminently hydraulic lime
  • (D) none of these

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Q. The compound responsible for the initial setting of cement, is ?

  • (A) tri-calcium aluminate
  • (B) tetra-calcium alumino ferrite
  • (C) both (a) and (b)
  • (D) none of these

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