Q.1
Coarse aggregates are classified into how many groups?
  • a) 3
  • b) 4
  • c) 6
  • d) 2
Q.2
How much percent of material which passes through a specific sieve is contained in that single-size aggregate?
  • a) 50-60%
  • b) 85-100%
  • c) 70-90%
  • d) 80-85%
Q.3
Graded aggregate contains particles of size:
  • a) Single grade
  • b) 4.75mm
  • c) Multi grade
  • d) <80mm
Q.4
Flaky particles have:
  • a) Small thickness
  • b) Elongated sides
  • c) Sharp edges
  • d) Rounded edges
Q.5
Which size coarse aggregate is ideal for use in a concrete mix?
  • a) Smaller
  • b) 4.75-10mm
  • c) Larger
  • d) 10-20mm
Q.6
Elongation index of coarse aggregates is calculated using:
  • a) E=w1/w2
  • b) E=w2/w1
  • c) E=w2-w1
  • d) E=w2+w1
Q.7
In crushing test on coarse aggregates, what size particle is taken as a sample?
  • a) Passing 12.5mm IS sieve
  • b) Retained on 10mm IS sieve
  • c) Passing 10mm and retained on 4.75mm IS sieve
  • d) Passing 12.5mm and retained on 10mm IS sieve
Q.8
What is the density of undisturbed gravel?
  • a) 2630-2760 kg/cum
  • b) 1920-2160 kg/cum
  • c) 1600 kg/cum
  • d) 1200 kg/cum
Q.9
What is the symbol used for well graded gravel as per ISC system of classification?
  • a) WG
  • b) G
  • c) GW
  • d) W
Q.10
Gravel is a type of:
  • a) Rounded aggregate
  • b) Angular aggregate
  • c) Flaky aggregate
  • d) Irregular aggregate
0 h : 0 m : 1 s