If water required for 1 bag of cement is 30 litres, the water cement ratio is :

Asbestos

The minimum compressive strength of 1st class bricks should be

Bitumen completely dissolves in

Pick up the rock which is not a sedimentary rock from the following:

Refractory bricks are

Calcination of iron ores is done

For a 50 kg cement bag water required, is

Pick up the correct statement regarding low heat cement from the following: