Click the correct answer (True or False).
Click the correct answer.
Which of the following processes takes place in humans without water?
Digestion of food
Breathing
Excretion of waste
Maintenance of body temperature
For which of the following process(es) do plants need water?
Photosynthesis
Transportation of minerals
Photosynthesis and mineral transportation
Respiration
Which of the following is a property of pure water?
Acidic
Neutral
Basic
Both acidic and basic
Which of the following is a property of potable water?
Clear and transparent
Contains odour
Contains dissolved and suspended impurities
Does not contain minerals necessary for our body
Which of these is the correct sequence of steps of purification of water obtained from lakes or rivers?
Sedimentation → Chlorination → Filtration
Chlorination → Filtration → Sedimentation
Sedimentation → Filtration → Chlorination
Filtration → Chlorination → Sedimentation
Which of the following is not an example of a colloid?
Smoke
Fog
Sugar mixed with water
Milk
Which of the following processes can remove temporary hardness of water?
Sedimentation
Filtration
Chlorination
Boiling
Click the correct answer.
is the purest form of water.
Rainwater
Surface water
Sea water
River water
The level of water under the ground is called
.
water level
water table
water cycle
groundwater
The continuous circulation of water between land, water bodies and atmosphere is called
.
water level
water table
water cycle
groundwater
by plants releases water to the atmosphere.
Respiration
Transpiration
Germination
Photosynthesis
is important as it maintains the level of water in the water table.
Surface water
Groundwater
Rainwater
Ocean water
The salts containing water of crystallisation are called
natural salts
dehydrated salts
artificial salts
hydrated salts
