Concrete Technology MCQs with answers Page - 1

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Q. Processes of cement manufacturing is…….?

  • (A) Wet process
  • (B) Dry process
  • (C) Semi-dry process
  • (D) All of above

A

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Q. After 28 days of curing, cement gains have been found to have hydrated to a depth of only…..u.

  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 5

A

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Q. Total…….. % of water by weight of water by weight of cement is required for complete hydration.

  • (A) 38
  • (B) 40
  • (C) 42
  • (D) 50

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Q. After 28 days of curing, cement gains have been found to have hydrated to a depth of only…..u.

  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 6

A

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Q. Total…….. % of water by weight of water by weight of cement is required for complete hydration.

  • (A) 40
  • (B) 38
  • (C) 42
  • (D) 50

A

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Q. Hydration of cement is due to chemical action of water with

  • (A) Tricalcium silicate and dicalcium silicate
  • (B) Dicalcium silicate and tricalcium aluminate
  • (C) Tricalcium aluminate and tricalcium alumino ferrite
  • (D) All the above.

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Q. Proper proportioning of concrete, ensures

  • (A) desired strength and workability
  • (B) desired durability
  • (C) water tightness of the structure
  • (D) all the above

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Q. An aggregate is said to be flaky if its least dimension is less than

  • (A) 1/5th of mean dimension
  • (B) 2/5th of mean dimension
  • (C) 3/5th of mean dimension
  • (D) 4/5th of mean dimension

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Q. A small quantity of …………. % of gypsum is added to prevent flash-setting of the cement.

  • (A) 1 to 2
  • (B) 2 to 3
  • (C) 9 to 10
  • (D) 10 to 12

A

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Q. Highest oxide composition present in cement is…

  • (A) Silica
  • (B) Alumina
  • (C) Iron oxides
  • (D) Lime

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