One of the most common water washed diseases is known as

  • Typhoid
  • Diarrhea
  • Trachoma
  • Hepatitis

A cow drinks approximately

  • 100 liters of water
  • 135 liters of water
  • 165 liters of water
  • 200 liters of water

The taste of 'water' is

  • sour
  • bitter
  • sweet
  • tasteless

As compared to shower, the bath tub uses

  • less water
  • more water
  • equal water
  • not sure

Human feces stimulates the growth of

  • algae
  • fungi
  • bacteria
  • viruses

The crops that need a lot of water are

  • rice and maize
  • wheat and maize
  • rice and wheat
  • maize and other grains

One-third of the water consumption by humans, goes to

  • drinking water
  • flushing toilets
  • bathing
  • washing cooking utensils

Distilled water contains

  • poison
  • bacteria
  • minerals
  • pure water without minerals

An artificial lake made by building a dam across river is called a

  • pond
  • reservoir
  • lake
  • stream

As the water evaporates, due to cold air it

  • drops back
  • condenses
  • turns into liquid
  • turns in gas

Hot water is bad for fish eggs to

  • lay
  • mature
  • hatch
  • grow

In sewage treatment plants, large material is removed by

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

Desalination plants are used to convert

  • hot water to cold water
  • cold water to hot water
  • tasteless water to salty water
  • salty water to tasteless water

To prevent excess use of tap water, we can collect

  • rain water
  • stream water
  • river water
  • sea water

The unwanted substance of water may be harmful for

  • plants
  • animals
  • plants, animals and people
  • plants and people

Polio, hepatitis and typhoid are examples of

  • water-borne diseases
  • water-washed diseases
  • water-related diseases
  • anti-water diseases

At treatment plant, raw water is mixed with alum and lime, it is called

  • coagulation
  • sedimentation
  • filtration
  • chlorination

The population which does not have tap water in their homes, is

  • two-third of the world population
  • one-third of the world population
  • half of the world population
  • quarter of the world population

Water can be kept clean by detergents, if they are

  • not poisonous
  • odorless
  • biodegradable
  • non biodegradable

'Distillation' can also be used to treat

  • fresh water
  • sewage water
  • polluted water
  • rain water

Which gas is often used as a energy source at the city's wastewater treatment plants?

  • ethane
  • carbon
  • methane
  • nitrogen

The removal of salt from water on a large scale is known as

  • water logging
  • salination
  • desalination
  • distillation

The alum is a compound of two elements, those are

  • aluminum and nitrate
  • aluminum and sulfate
  • sodium and nitrate
  • sodium and sulfate

The disease due to water-related disease is broken out by

  • bacteria
  • viruses
  • snails
  • worms

The average amount of water which a large deciduous tree takes, is

  • 1000 liters
  • 20,000 liters
  • 5000 liters
  • 50,000 liters

The water in ponds, lakes, streams and rivers is called fresh water because it is

  • sweet
  • tasteless
  • bitter
  • clean

The most essential element for crop is

  • water
  • fertilizers
  • soil
  • humidity

If not receives treatment, trachoma may cause

  • deep eye infection
  • eye injuries
  • blindness
  • dizziness

The remaining sewage after it has passed through the sludge tank is known as

  • treated sewage
  • effluent
  • clinker
  • distillate

Human's infected feces contains

  • bacteria
  • viruses
  • snails
  • worms
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