Excess of alumina in brick earth makes the brick

The thermosetting plastic

Soundness of cement is tested by

Which of the following is a mineral?

Gypsum consists of

As per IS specifications, the maximum final setting time for ordinary Portland cement should be

According to IS 399-1963, the weight of the timber is specified at

Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good b…

Sandstone is a<br> (i) Sedimentary rock<br> (ii) Aqueous rock<br> (iii) Siliceous rock