For the following questions answer them individually
The horizontal angle between the true meridian and a survey line is called
The lines passing through points at which the magnetic declination is equal at a given time are called
The method of plane tabling commonly used for establishing the instrument stations only, is a
The ratio between the area of a crop irrigated and the quantity of water required during its entire period of the growth, is known as
Irrigation canals are generally aligned along
The vertical wells provided along the banks of a river to draw ground water in dry season are called
The desirable limit of chloride content as per BIS standards in water for domestic supplies should not exceed
B-coli or E-coli are generally harmless organisms and their presence in water indicates the
The most common coagulant used in water treatment plants is