Types of impurities that can settle on their own if given enough time are called

• a) Pollution

• a) Contamination

• a) Hardness

• a) Turbidity

Ground water in comparison to surface water is usually

• a) More pure

• a) More impure

• a) At same level of pollution

• a) Can be at any state

1. Ppm is equivalent of

• a) g/l

• a) mg/l

• a) kg/l

• a) µg/l

1. Pure water has a pH of

• a) 8

• a) 7

• a) 3

• a) 5

1. Malaria and dengue are types of

• a) Water borne diseases

• a) Water washed diseases

• a) Water based diseases

• a) Water related insect vector diseases

1. The quantity of water demand for industrial purpose is around

• a) 12 to 20% of the total demand of the city.

• a) 20 to 25% of the total demand of the city.

• a) 25 to 30% of the total demand of the city.

• a) 30 to 35% of the total demand of the city.

1. Maximum daily demand =

• a) 1.8 x average daily demand

• a) 1.2 x average daily demand

• a) 1.5 x average daily demand

• a) 1.3 x average daily demand

1. Water circulates the environment in a cycle called

• a) Hydrological cycle

• a) Hydro chemical cycle

• a) Aeronautical cycle

• a) Hydrographic cycle

1. Surface beneath the surface, partially filled with water is called

• a) Saturation zone

• a) Aeration zone

• a) Cleaning zone

• a) Red zone

1. an aquifer created by a small aquiclude at a higher level than the water table

• a) Confined Aquifer

• a) Unconfined Aquifer

• a) Perched aquifer

• a) Extra aquifer