The time required for air seasoning of soft wood is

A good Portland cement when tested for fineness, the percentage of residue left after sieving in 90 micron IS sieve shou…

Enamel paint is made by adding

For R.C.C. construction, the maximum size of coarse aggregate is limited to

The average out-turn of first class bricks in kiln burning is

The base in a paint is added to

The shrinkage of concrete

Which of the following is an example of silicious rock?

The commonly used lime in white washing is