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Loamy, mild or sandy clay has __________ percentage of alkali?(a) 5%(b) 1%(c) 4%(d) 0%I had been asked this question by my school teacher while I was bunking the class.My query is from Composition of Good Brick Earth in division Materials for Construction of Basic Civil Engineering

Answer»

The correct choice is (d) 0%

To explain I would say: It does not contain any alkali contents.It contains 5% of organics matter, 1% of LIME, magnesia and oxides of iron, 66% of SILICA and 27% of ALUMINA.



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