Asbestos . . . . . . . .

For one cubic metre of brick masonry, number of bricks required, is

Oil varnish generally consists of

Cast iron contains carbon approximately

Bitumen emulsion is

Which of the following should be used for hearting of thicker walls?

Calcination of iron ores is done

Which of the following metamorphic rocks has the most weather resisting characteristics?

The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called