The most valuable timber may be obtained from

The rocks which are formed due to pouring of magma at the earth's surface are called

Pick up the correct statement from the following:

Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:

Pick up the correct statement from the following:

With storage, strength of cement

The usual percentages of clay and metal in cermet are :

Pick up the non-inflammable plastic from the following:

Mastic asphalt is