Expanding cement is obtained by the addition of an expanding medium like _____ to the ordinary cement.

Which of the following is not a synthetic resin?

The amount of inert filler in plastic bitumen is about _____

Which of the following is not a property of a good electrical insulator?

Which of the following is not a hydrophobic admixture?

Coal gas is obtained by thermal decomposition of coal in the presence of air at low temperature.

The power to resist an electric stress is called as _______

The colour of natural cement is ______