The strength of timber is maximum in the direction

Distemper is used on

The advantage of adding pozzolana (or surkhi) to lime is to

The amount of gypsum, usually, added in the manufacture of cement is

The workability of cement concrete can be improved by

The soundness of cement is tested by

Which of the following statement is correct?

The standard size of a masonry brick is 20 cm x 10 cm x 10 cm

The percentage of silica in a good brick clay should vary from