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How is the hardness of brick tested?

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in Basic Civil Engineering by (111k points)
How is the hardness of brick tested?

(a) Using finger nail

(b) Using hardness apparatus

(c) Using hammer

(d) Using chisel

The question was asked in my homework.

My query is from Tests on Bricks topic in division Materials for Construction of Basic Civil Engineering

1 Answer

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Right choice is (a) Using finger nail

To explain: Brick is scratched using finger nail.  If there are no visible scratches made on the brick surface, it is said to be sufficiently hard.

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