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MCQs

Total Questions : 1012 | Page 100 of 102 pages
Question 991. 4.  Which one of the following tests, is used to test aggregate fonts abrasion resistance
  1.    Deval attrition test
  2.    Dorry abrasion test
  3.    Los Angeles test
  4.    All of these
 Discuss Question
Answer: Option A. -> Deval attrition test
Question 992. 8.  Which one of the following pro; rties of plastic concrete is modified by the air-entraining agt-its
  1.    workability
  2.    segregation
  3.    bleeding
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 993. 9.  Common sugar can be suitably used:
  1.    to delay the setting time of concrete
  2.    to accelerate the setting time of concrete
  3.    to increase the strength of concrete
  4.    none of these
 Discuss Question
Answer: Option A. -> to delay the setting time of concrete
Question 994. 0.  Which one of the following materials is used as a bonding admixture
  1.    natural rubber
  2.    synthetic rubber
  3.    organic polymers
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 995. 2.  Pick up the correct statement from the following: Drying shrinkage is affected by
  1.    the relative humidity of the atfriosphere when the concrete is placed
  2.    the length of time
  3.    the water/cement ratio of the concrete
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 996. 3.  No shrinkage occurs if the concrete is placed in a relative humidity of
  1.    100 percent
  2.    85 percent
  3.    70 percent
  4.    50 percent
 Discuss Question
Answer: Option A. -> 100 percent
Question 997. 5.  For the construction of radiation shields, which one of the following concretes is preferred?
  1.    normal concrete
  2.    1 jilt weight concrete
  3.    heavy weight concrete
  4.    None of these
 Discuss Question
Answer: Option C. -> heavy weight concrete
Question 998. 1.  Pick up the correct dimensions of the mould for slump test from the following:(Top-Bottom diameter-Height diameter)
  1.    10-20-30
  2.    20-30-10
  3.    30-10-20
  4.    20-30-40
 Discuss Question
Answer: Option A. -> 10-20-30
Question 999. 6.  Consider the following statements regarding the importance of compound composition of cement : 1 Tri calcium silicate is most important 2 Di calcium silicate is most important 3 Tetracalcium alumino ferrite is most important of these statements :
  1.    1 slone is correct
  2.    1 and 2 are correct
  3.    2 alone is correct
  4.    3 alone is correct
 Discuss Question
Answer: Option B. -> 1 and 2 are correct
Question 1000. 4.  Pick upthe correct statement from the following:
  1.    Density of normal concrete is about 2400 kg per cubic metre
  2.    Density of light weight concrete is about 1900 kg per cubic metre
  3.    Density of heavy concrete is about 3850 kg per cubic metre
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above

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