Graded aggregate
All-in-aggregate
Continuous aggregate
None of these
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40 mm
35 mm
25 mm
20 mm
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Decreases
Increases
First increases then decreases
First decreases then increases
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Rounded
Irregular
Flaky
Angular
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Rounded
Flaky
Irregular
Angular
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Flaky
Irregular
Angular
Rounded
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Rounded
Irregular
Angular
Flaky
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Lowest surface area for given volume
Highest surface area for given volume
Lowest perimeter for a given volume
None of these
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Reduces workability
Reduces durability
Hardened concrete looks like a stratified rock
All of these
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More than 6%
Less than 6%
More than 16%
Less than 16%
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In river waters
Sea waters
In cold environment
In hot environment
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In under water structures
In structures in alkaline soils
In all places where ordinary Portland cement is used
All of these
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Alumina
Lime
Silica
All of these
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45% calcium oxide and about 35% silica
50% alumina and 20% calcium oxide
25% magnesia and 15% silica
25% calcium sulphate and 15% alumina
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