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________ is a metamorphic rock which is used in street paving, rough stone masonry work, etc.

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________ is a metamorphic rock which is used in street paving, rough stone masonry work, etc.

(a) Granite

(b) Gneiss

(c) Marble

(d) Sandstone

This question was addressed to me in an online interview.

The question is from Common Building Stones of India topic in division Stone and Brick Masonry of Construction & Building Materials

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The correct option is (b) Gneiss

Explanation: Gneiss splits into themes labs and it is easy to work. Its specific gravity is 2.69 and compressive strength is 206 Newton per mm square. It is mostly found in Madras, Bihar, Maharashtra, Bengal, Kerala and Gujarat.

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