Concrete Technology MCQs with answers Page - 2

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Q. First 7 days strength in cement is due to….. Bogue compound.

  • (A) C3S
  • (B) C2S
  • (C) C3A
  • (D) C4AF

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Q. Heat of hydration of C3S at 90 days is ………. cal/g

  • (A) 58
  • (B) 104
  • (C) 122
  • (D) 150

A

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Q. ……refers to the gain of strength of a set cement paste.

  • (A) Setting of cement
  • (B) Hardening of cement
  • (C) .…
  • (D) …

A

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Q. For long time storage ……..cement used.

  • (A) Masonry cement
  • (B) Ordinary
  • (C) Hydrophobic
  • (D) All of above

A

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Q. Repair of air-field pavement use……

  • (A) Air entrained cement
  • (B) Very high Strength cement
  • (C) Rediset Cement
  • (D) All of above

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Q. Note more than ……. bags should be kept one above other.

  • (A) 20
  • (B) 25
  • (C) 14
  • (D) Any of these

A

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Q. The weight of residue should not exceed ……. for OPC.

  • (A) 10 %
  • (B) 20 %
  • (C) 30%
  • (D) 40%

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Q. For consistency test vicat plunger having ……. dia and …….. Length is used.

  • (A) 15 mm & 45 mm
  • (B) 10 mm & 50 mm
  • (C) 20 mm & 60mm
  • (D) Any of above

A

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Q. For OPC Value of IST And FST is…

  • (A) 30 m & 600 m
  • (B) 50 m & 700 m
  • (C) 20m & 500 m
  • (D) 40m & 800 m

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