A good quality stone absorbs water less than

Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as

Which of the following has more fire resisting characteristics?

A stone is rejected if it absorbs water more than

In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is

Pick up the synthetic resin from the following:

The minimum compressive strength of 2<sup>nd</sup> class bricks should be

The most commonly used synthetic abrasive is

Whitworth compressed steel is obtained when molten steel is subjected to a pressure of