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Q: Which of the following types of rock exhibits less crushing strength when compared to other mentioned type of rocks?
  • A. Laterite
  • B. Trap
  • C. Granite
  • D. Gneiss
Correct Answer: Option A - Crushing strength– Granite – 77 to 130 N/mm² Trap and basalt – 150 to 190 N/mm² Gneiss – 150 to 200 N/mm² Laterite stone– It is on argillaceous and sedimentary rock. Laterite stone can be split into thin slabs. • It is used for rough stone masonry work. • It is porous or cellular structure. • It is soft and easy to work. Laterite– 2 to 4 N/mm²
A. Crushing strength– Granite – 77 to 130 N/mm² Trap and basalt – 150 to 190 N/mm² Gneiss – 150 to 200 N/mm² Laterite stone– It is on argillaceous and sedimentary rock. Laterite stone can be split into thin slabs. • It is used for rough stone masonry work. • It is porous or cellular structure. • It is soft and easy to work. Laterite– 2 to 4 N/mm²

Explanations:

Crushing strength– Granite – 77 to 130 N/mm² Trap and basalt – 150 to 190 N/mm² Gneiss – 150 to 200 N/mm² Laterite stone– It is on argillaceous and sedimentary rock. Laterite stone can be split into thin slabs. • It is used for rough stone masonry work. • It is porous or cellular structure. • It is soft and easy to work. Laterite– 2 to 4 N/mm²