Pick up the incorrect statement regarding a master trap from the following :

During the disposal of the sludge, it must be .............

While estimating a reinforced cement structure, the omitted cover of concrete is assumed

Pick up the correct statement from the following:

The main factor to be considered while preparing a detailed estimate, is

The rate of payment is made for 100 cu m (per % cu m) in case of

In case of laying gullies, siphons, intercepting traps, the cost includes

Anti-siphonage pipe is connected to

A .........................is used to level the ground and spreads the loose material.