The normal consistency of ordinary Portland cement is about

Generally wooden moulds are made from

Distemper is

The normal curing period for lime mortar, is:

Stainless steel resists corrosion due to

The most fire resistant paints are:

Initial setting time of cement for asbestos cement products should be not less than

The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:

Priming consists of