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Basic Civil Engineering
Basic Civil Engineering Assessment
Quiz 1
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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
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