Question

Which of the following does rainwater contain ?

a.dissolved salts
b. dissolved gases
c. sewage
d. pesticides
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Answer 1

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Which of the following does rainwater contain ?

a.dissolved salts

b. dissolved gases✓

c. sewage

d. pesticides

Rainwater is typically devoid of all dissolved solids but contains dissolved gases (oxides of carbon, nitrogen and sulphur) which result in pH values of about 5.5 or lower. In coastal areas rainwater may also contain up to 15 mg/l of sodium chloride from sea-spray.

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Answer 2

Answer:

b) dissolved gases

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