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Q: According to IS 1121 (Part I):1974, the diameter or lateral dimension (distance between opposite vertical faces) of a test piece of stone used for finding its compressive strength shall not be less than_____.
  • A. 100 mm
  • B. 50 mm
  • C. 25 mm
  • D. 75 mm
Correct Answer: Option B - As per IS code 1121 (part 1)-1974 Test pieces and conditioning– The diameter of lateral dimension (distance between opposite vertical faces) of a test piece shall not be less than 50 mm and the ratio of height to diameter or lateral dimension shall not less than 1 : 1.
B. As per IS code 1121 (part 1)-1974 Test pieces and conditioning– The diameter of lateral dimension (distance between opposite vertical faces) of a test piece shall not be less than 50 mm and the ratio of height to diameter or lateral dimension shall not less than 1 : 1.

Explanations:

As per IS code 1121 (part 1)-1974 Test pieces and conditioning– The diameter of lateral dimension (distance between opposite vertical faces) of a test piece shall not be less than 50 mm and the ratio of height to diameter or lateral dimension shall not less than 1 : 1.