The distance through which the tongue ral moves laterally at the toe of the switch for movement of train is called

Cast iron cannot be forged because it has the property of

The most important quality of any lubricant is

The level tube/bubble tube is filled with

The innermost part of the stem which consists entirely of cellular tissues is called :

The under surface of a stair is called

For an area of 1000 sq km, the number of rain gauge stations will be

Compaction of soil is measured in terms of

BOD in potable water in any be

Bottom most layer of pavement is known as