Dirt thrown into lakes, rivers and ponds:
Contaminates it
Makes it fresh
Adds oxygen
Adds nutrients
Why the river water is is contaminated?
Throwing the dirt from home and factory
Mixing with ground water
Because of rain
All of these
Dirty water is cleaned in the:
Clay factory
Workshop
Waterworks
Which of these are the man made sources of water?
Rain
Ponds
Stream
Canals
Which of the following is a source of surface water?
Lakes
Tube wells
Wells
Hand pump
From the following things name the one that is not required to prepare a filter
Plastic bottle
Sand
Stones
Rubber
Which of the following is a source of ground water?
Glaciers
Water present on the surface of the earth is referred to as:
Surface water
Ground water
Table water
Water table
Dirty water mainly contains:
Germs
Vitamins
Iron
Oxygen
Drinking dirty water makes us:
Healthy
Sick
Fat
None of these
