WorksheetsPollution of Air & Water
Total questions: 10
Worksheet time: 6mins
Water from natural sources is treated from _________
Microorganisms
Toxic Materials
Food
None of these
Potable water is used for ________ purposes
Bathing
Watering
Cleaning
Drinking
Water purification means the process of removing undesirable chemicals, ___________________ from water.
biological contaminants
suspended solids
and gases
When water is poured, the impurities do not pass through the _______
Holes
Gap
Pores
Which of the following are added before the water reaches the Clean Water Tank?
Fluoride
Ammonia
Chlorine
Fluorine
What is sedimentation process in Water Purification?
Settling of matter
Cleaning of water through pores
None of these
_________ process is only used to treat small quantities of water.
Boiling
Chemical Treatment
Water Purifying gadgets
Water can be purified by addition of disinfectants in correct proportion. Which process is this?
(a)
Purification of water is done at a large scale in a (a) . (Write all words in small letters.)
Water from a river is made free from large entities such as leaves, twigs, etc. by passing them through (a) . (Write the first letter in Uppercase... If there is a second word no need for writing the first letter in uppercase)
