Concrete Technology MCQs with answers Page - 38

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Q. The knowledge of a standard consistency of a cement paste is essential to perform

  • (A) setting time test
  • (B) soundness test
  • (C) compressive strength test
  • (D) all of these

A

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Q. The placing of concrete should start width-wide in reinforced cement concrete slabs from one end.

  • (A) True
  • (B) False
  • (C) ---
  • (D) ---

A

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Q. The separation of water or water-cement mixture from the freshly mixed concrete is known as bleeding.

  • (A) True
  • (B) False
  • (C) ---
  • (D) ---

A

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Q. The phenomenon by virtue of which the cement does not undergo large change in volume when treated with water, is known as

  • (A) fineness
  • (B) soundness
  • (C) setting time
  • (D) none of these

A

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Q. The concrete in which preliminary tests are performed for designing the mix is called

  • (A) rich concrete
  • (B) controlled concrete
  • (C) lean concrete
  • (D) ordinary concrete

A

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Q. The type of lime used in lime concrete is

  • (A) fat lime
  • (B) poor lime
  • (C) slaked lime
  • (D) hydraulic lime

A

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Q. Segregation in concrete results in

  • (A) honey combing
  • (B) porous layers
  • (C) surface scaling
  • (D) all of these

A

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Q. The sum of percentages of all deleterious materials in the aggregate shall not exceed

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

A

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Q. Tricalcium silicate develops strength in cement for first 7 days.

  • (A) Yes
  • (B) No
  • (C) ---
  • (D) ---

A

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Q. The presence of dicalcium silicate in cement

  • (A) hydrates the cement slowly
  • (B) generates less heat of hydration
  • (C) has more resistance to sulphate attack
  • (D) all of these

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