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MCQs

Total Questions : 1012 | Page 99 of 102 pages
Question 981. 1.  The strength of concrete made with angular aggregate and rounded aggregate is practically same atthe water/cement ratio of
  1.    4
  2.    48
  3.    55
  4.    65
 Discuss Question
Answer: Option D. -> 65
Question 982. 7.  The Le Chatlier test is done for cement to ascertain:
  1.    initial setting time
  2.    final setting time
  3.    soundness
  4.    normal consistency
 Discuss Question
Answer: Option C. -> soundness
Question 983. 2.  Pick up the correct statement from the following:
  1.    The percentage of voids in the aggregate after proper compaction, is calledthe angularity number
  2.    Angular aggregate are superior to rounded aggregate
  3.    The surface texture depends upon the hardness, grain size, free structure and the structure of the rock
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 984. 9.  The maximum size of aggregate in concrete depends upon:
  1.    thickness of the structural section
  2.    spacing of reinforcement
  3.    clear cover
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above
Question 985. 8.  Using the largest maximum size of aggregate in concrete reduces:
  1.    the cement content
  2.    water requirement
  3.    drying shrinkage
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above
Question 986. 0.  Pick up the correct statement from the following
  1.    The aggregate whose size is greater than 4 75 mm is caleed coarse aggregate
  2.    The aggregate whose size is 4 75 mm is called coarse aggregate
  3.    The aggregate whose size is lesser than 475 mm is called fine aggregate
  4.    None of the above
 Discuss Question
Answer: Option A. -> The aggregate whose size is greater than 4 75 mm is caleed coarse aggregate
Question 987. 3.  For concreting the surface ofthe runways, roads and pavements, the aggregate impact value shall not exceedby weight
  1.    20%
  2.    25%
  3.    30%
  4.    45%
 Discuss Question
Answer: Option C. -> 30%
Question 988. 6.  The flankiness index of aggregates is the percentage by weight of particles in it whose thickness is less than
  1.    2/5th of mean length
  2.    3/5th of mean length
  3.    4/5th of mean length
  4.    none of these
 Discuss Question
Answer: Option B. -> 3/5th of mean length
Question 989. 5.  Pick up the correct statement from the following:
  1.    The property of expanding rocks more in direction parallel to one crystallograhic axis than another is called anisotropic property
  2.    The most anisotropic rock is calcite
  3.    The coefficeint of thermal expansion of aggregae is of prime importance for fire resistance of concrete
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 990. 7.  Sea water:
  1.    contains a salinity of about 35 percent
  2.    corrodes the reinforcement of R0
  3.    acceleraes the setting time of cement
  4.    all the above
 Discuss Question
Answer: Option D. -> all the above

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