water quality

Select the ways that water get contaminated.

• Land pollution

• Using of chemical fertilisers

• Harvesting

• Sewage discharge

From the water bodies, what is the amount freshwater available on Earth?

• 1%

• 3%

• 97%

• 70%

whater is a chemical compound made of ..............

• 2 oxygen atoms and 1 hydrogen atom

• 2 hydrogen atoms and 1 oxygen atom

• 2 oxygen atoms and 2 hydrogen atoms

• 2 oxygen atoms and 1 carbon atom

Water is a universal solvent

• true

• false

Select the ways to maintain water quality.

• Choose environment friendly options for pest control

  and fertilisers.

• Throw garbage to the rivers.

• Keep drains clear and unclogged.

• Take all unwanted chemicals, paint, oil to designated collection sites.

We get fresh water from underground only.

• true

• fasle

the percentage of usable freshwater on Earth is

• 30

• 3

• 1

• 70

Select the places where we get freshwater.

• glaciers

• rivers

• oceans

• reefs

• lakes

Solid state of water is called ............

• ice

• steam

• liquid

The rain water we collect contain impurities.

• true

• false