Question

1.Under normal atmospheric pressure what temperature does:

i.Ice turn to water?
ii.water turn to steam?

2.In which order do the following take place during water purification?

a)chlorination b)screening c)filtration d)sedimentation

b.Which of these processes ensures that the water contains no harmful microorganisms

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Answer 1

B

Step-by-step explanation:

B

Answer 2

1.i)heat

ii.)heat

2.a.)b,c,d,a

b.)a.chlorination