Click the correct answer (True or False).
Click the correct answer.
A solution is said to be which of the following when it can dissolve more of the solute at a particular temperature?
Saturated
Unsaturated
Solvent
Supersaturated
Which of the following is a water-borne infection in the small intestine caused by a bacterium?
Cholera
Hepatitis B
Typhoid
Jaundice
Water is not essential for which of the following?
Digestion of food
Excretion of waste
Germination of seed
Manufacturing of a wooden chair
Water is not used in which of the following options?
Agriculture
Powerhouses
River rafting
Cutting of a straw
What is the pool of water that is obtained by digging the soil till the impervious layer called?
Spring water
Well water
Groundwater
Rainwater
Which of the following substances are insoluble in water?
Sand and salt
Sugar and wood
Wood and sand
Sugar and salt
Which of these techniques is the easiest and the most recommended purification technique?
Sedimentation and decantation
Filtration
Chlorination
Boiling
Which of these is not a cause of water pollution?
Discharge of domestic waste
Addition of chlorine
Leakage of oil during drilling and shipping operations
Discharge of wastes from nuclear plants
Click the correct answer.
About
of the fresh water is present in rivers, lakes, springs, ponds, etc.
one-third
half
two-thirds
one-fourth
In
state, water exists as snow or frost.
liquid
solid
gaseous
every
Water exists as
or steam in gaseous state.
steam
water vapour
snow
stream
Water regulates the body
of plants and animals.
weight
rate
height
temperature
Water acts as a
in powerhouses which generate electricity.
solvent
solute
coolant
carrier
