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Blast furnace slag is the mixture of ___________

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Blast furnace slag is the mixture of ___________

(a) Slaked lime and calcium silicate

(b) Aluminium silicate and hydrated lime

(c) Calcium silicate and aluminium silicate

(d) Silica, alumina and calcium oxide

I had been asked this question by my college director while I was bunking the class.

This is a very interesting question from Construction Material Cement in division Materials and their Properties of Engineering Chemistry I

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Correct choice is (c) Calcium silicate and aluminium silicate

The best explanation: Blast furnace slag is the mixture of Calcium silicate and aluminium silicate. Ground-granulated blast-furnace slag is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.

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