Which of the following has more fire resisting characteristics ?

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Quartitze is a_____________?

A. silicious rock B. argillaceous rock C. calcareous rock D. aqueous rock...

Excess of alumina in brick earth makes the brick______________?

A. impermeable B. brittle and weak C. to lose cohesion D. to crack and warp on drying...

Glazing is used to make earthenware______________?

A. hard B. soft C. porous D. impervious...

With increase in moisture content, the bulking of sand_______________?

A. increases B. decreases C. first increases to a certain maximum value and then decreases D. first decreases to a certain minimum value and then increases...

Couple close roof is suitable for maximum span of______________?

A. 2.5 m B. 3.5 m C. 4.5 m D. 5.5 m...