Bitumen felt

The most durable varnish is

Which of the following has more fire resisting characteristics?

Pick up the correct statement from the following:

Seasoning of timber is essential to remove

Pick up the correct statement from the following:

The size of mould for bricks, is generally kept

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

Quick lime is<br> (i) Slow in setting<br> (ii) Rapid in slacking<br> (iii) Good in strength