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Per §2.2.14, the Fineness Modulus range that corresponds to MEDIUM sand is:
A{'text': '2.6 to 2.9', 'label': 'A'}
B{'text': '2.2 to 2.6', 'label': 'B'}
C{'text': '1.5 to 2.0', 'label': 'C'}
D{'text': '2.9 to 3.2', 'label': 'D'}
Answer & Solution
Correct answer: A. {'text': '2.6 to 2.9', 'label': 'A'}
1. §2.2.14 provides three FM bands: Fine sand 2.2 to 2.6, Medium sand 2.6 to 2.9, Coarse sand 2.9 to 3.2.
2. A sand with FM > 3.2 is considered unsuitable for making concrete.
_Source: IGNOU ET-522 Block-1 Unit-2 Aggregates, §2.2.14 (Fineness Modulus), p. 28_
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