Question

# fill in the blanks
1. ________ water is used in car batteries, science experiments and medicine.
2. ________ method can be used to get salt from salt water solution.
3. chlorine gas is used to kill _________ present in water.

# tick (√) the correct answer
1. air is made up of ( 21/24) present of oxygen and it also contains dust, water vapour etc.
2. water living the sediment behind is called ( filtration/decantation)
3. the air pressure is measured using ( barometer/ pressure gauge)
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Answer 1

Answer:

chemical water

filtration method

germs

Explanation:

tick the correct answer

21

decantation

barometer