search
arrow-left Previous
Next arrow-right
Q: In India, stones with a specific gravity less than _____ are considered unsuitable for buildings
  • A. 3.2
  • B. 3.6
  • C. 2.8
  • D. 2.4
Correct Answer: Option D - Denser stones are stronger, light weight stones are weak. Hence, stone with a specific gravity of less than 2.4 are considered unsuitable buildings. • As per IS recommendation, a minimum crushing strength of 3.5 N/mm2 for any building block. • A good stone should not show wear of more than 2%. • Stones with a toughness index of more than 19 are preferred for road works.
D. Denser stones are stronger, light weight stones are weak. Hence, stone with a specific gravity of less than 2.4 are considered unsuitable buildings. • As per IS recommendation, a minimum crushing strength of 3.5 N/mm2 for any building block. • A good stone should not show wear of more than 2%. • Stones with a toughness index of more than 19 are preferred for road works.

Explanations:

Denser stones are stronger, light weight stones are weak. Hence, stone with a specific gravity of less than 2.4 are considered unsuitable buildings. • As per IS recommendation, a minimum crushing strength of 3.5 N/mm2 for any building block. • A good stone should not show wear of more than 2%. • Stones with a toughness index of more than 19 are preferred for road works.