Water supply through pipelines and tube wells to farm is known as

  • fertilization
  • hydration
  • irrigation
  • pollination

Oil on the feathers prevents

  • birds from keeping themselves warm
  • bugs from entering the bird's feathers
  • cold air from entering the body
  • dust to enter feathers

The waste water from houses, buildings and other areas is called

  • waste water
  • sewage
  • seepage
  • aquarium waste

Chlorine helps

  • to kill bacteria
  • in heating water
  • in cooling water
  • to evaporate water

The percentage of water on earth is

  • 0.5
  • 0.6
  • 0.7
  • 0.8

Distillation is similar to a natural process known as

  • nitrogen cycle
  • carbon cycle
  • water cycle
  • sewage cycle

To prevent trachoma

  • antibiotic medicines should be taken
  • abiotic medicines should be taken
  • biotic medicines should be taken
  • plenty of water should be used to wash ourselves

Hot water also stimulates the growth of

  • algae
  • fungi
  • bacteria
  • viruses

The number of 'oceans' on earth is

  • 4
  • 5
  • 6
  • 7

The remains of salt over the soil after evaporation of water is known as

  • water logging
  • salivation
  • dehydration
  • hydration

Litters such as plastic bags are harmful for

  • fish
  • turtles
  • alligators
  • plants

The worst disease of the water-related diseases is

  • typhoid
  • diarrhea
  • bilharzia
  • hepatitis

Fertilizers that are washed away into rivers help in formation of

  • algae
  • fungi
  • fungus
  • all of them

Feces and urine is also part of

  • garbage
  • treated waste
  • untreated waste
  • all of them

On earth percentage of fresh water is

  • 0.03
  • 0.05
  • 0.1
  • 0.2

The solid matter settled at the bottom is scraped away by electricity in

  • metal screen
  • grit tank
  • sludge tank
  • filter bed

The mortality rate in children due to polluted water or lack of water is

  • 14000
  • 35000
  • 70000
  • 90000

The spread of a disease through drinking water that is caused by water parasites, is known as

  • water-borne disease
  • water-washed disease
  • water-related disease
  • anti water disease

A larvae of a worm can get into the human body even by

  • ears
  • eyes
  • skin
  • nose

Fresh water can be found in

  • lakes and streams
  • seas and oceans
  • seas and rivers
  • oceans and rivers

After the water has been filtered and cleaned, it is pumped into

  • roof tanks
  • storage tanks
  • petroleum tanks
  • streams

The color of water is

  • blue
  • green
  • white
  • none

Under the ground, water can be found in the form of

  • streams
  • ice
  • snow
  • rocks

'Trachoma' is a disease of eyes that spreads in

  • cold and wet climate
  • cold and dry climate
  • hot and wet climate
  • hot and dry climate

Waste chemicals and harmful metals like mercury make the water

  • green
  • stale
  • stagnant
  • poisonous

Poisonous substances from landfills can be washed away into rivers by

  • flood
  • rainwater
  • underground river water

The bacteria that decompose algae take up all the

  • sunlight
  • oxygen
  • minerals
  • useful gases in the water

'Water' is

  • sweet
  • sour
  • bitter
  • odorless

A method which is used to obtain fresh water, is

  • chlorination
  • filtration
  • distillation
  • zinc

The parasite worms spend a part of their life in

  • human stomach
  • human intestines
  • human blood vessels
  • human liver
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