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Aggregates are classified on the basis of weight into three broad groups. These are:
A{'text': 'Round, irregular and flaky aggregates', 'label': 'A'}
B{'text': 'Normal, light and heavy weight aggregates', 'label': 'B'}
C{'text': 'Igneous, sedimentary and metamorphic aggregates', 'label': 'C'}
D{'text': 'Natural, manufactured and recycled aggregates', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'Normal, light and heavy weight aggregates', 'label': 'B'}
1. §2.2.1 lists the weight-based classification: 'Normal weight, Light weight, Heavy weight.'
2. Shape (rounded/irregular/flaky) is the §2.2.4 axis; source rocks are §2.2.2; natural-versus-artificial is a sub-classification within normal weight.
_Source: IGNOU ET-522 Block-1 Unit-2 Aggregates, §2.2.1, p. 19_
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