Concrete Technology MCQs with answers Page - 22

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A

Admin • 833.24K Points
Coach

Q. If L1=Measurement taken after 24 hours of immersion in water at a temp. of 27 ± 20oC and L2=Measurement taken after 3 hours of immersion in water at boiling temperature. Then what is soundness of cement?

  • (A) L1+L2
  • (B) L1/L2
  • (C) L1-L2
  • (D) L1*L2

A

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Q. Which of the following option is correct?

  • (A) Standard consistency (%) = (wt of water added/ wt of cement) *100
  • (B) Standard consistency (%) = (wt of water added- wt of cement) *100
  • (C) Standard consistency = (wt of water added/ wt of cement) *100
  • (D) Standard consistency (%) = (wt cement/ wt of water) *100

A

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Q. According to geological origin, aggregates is/are classified into __________ types.

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4

A

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Q. Crushed stone, gravel and ordinary sand are examples of ___________

  • (A) Lightweight aggregate
  • (B) Normal-weight aggregate
  • (C) Heavy-weight aggregate
  • (D) Both Normal-weight aggregate and Heavy-weight aggregate

A

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Q. Which type of aggregate is shown below?

  • (A) Angular aggregate
  • (B) Rounded aggregate
  • (C) Flaky aggregate
  • (D) Irregular or partially aggregate

A

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Q. The rock which is not calcareous, is :

  • (A) lime stone
  • (B) Macl
  • (C) Chalk
  • (D) Laterite

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Q. Grading of aggregates should be continuous for

  • (A) lean
  • (B) rich
  • (C) ---
  • (D) ---

A

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Q. Which of the following ingredient of cement when added in excess quantity, causes the cement to set slowly?

  • (A) Lime
  • (B) silica
  • (C) alumina
  • (D) iron oxide

A

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Q. An aggregate having all the pores filled with water but having dry surface is called

  • (A) very dry aggregate
  • (B) dry aggregate
  • (C) saturated surface dry aggregate
  • (D) moist aggregate

A

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Q. The internal friction between the ingredients of concrete is minimised by

  • (A) adopting coarse aggregates
  • (B) using more water
  • (C) reducing the surface area
  • (D) all of these

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