The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is_______________?

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Granite is not suitable for ordinary building purpose because_______________?

A. it can not be polished B. it is not a fire proof material C. it is costly D. it has less crushing strength...

Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is_________________?

A. 0° B. 30° C. 45° D. 90°...

Quick lime is_______________?

A. calcium carbonate B. calcium oxide C. calcium hydroxide D. none of the above...

For testing compressive strength of cement, the size of cube used is_______________?

A. 50 mm B. 70.6 mm C. 100 mm D. 150 mm...

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...