________ is an impure limestone.(a) Sandstone(b) Slate(c) Laterite(d) – InterviewSolution

1.	________ is an impure limestone.(a) Sandstone(b) Slate(c) Laterite(d) KarkarThe question was posed to me in class test.Origin of the question is Common Building Stones of India in section Stone and Brick Masonry of Construction & Building Materials
Answer» The correct choice is (d) Karkar To elaborate: KANKAR is a sedimentary ROCK that is impure in nature. It is used in road METAL, manufacture of hydraulic line, etc. It is MOSTLY found in north and CENTRAL part of India.

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