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Question

High alumina cement is produced by fusing together a mixture of

A
limestone and bauxite
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B
limestone, bauxite and gypsum
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C
limestone, gypsum and clay
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D
limestone, gypsum, bauxite, clay and chalk
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Solution

The correct option is A limestone and bauxite
High alumina cement is manufactured by fusing together a mixture of 40% bauxite , 40% lime and 15% iron oxide and ferric oxide, 5% silica, magnesia etc.

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