7. Tiny bubbles seen on the surface of boiling water is (1)
a) Dissolved air escaping when water is heated.
b) Dissolved impurities in water escaping when water is heated.
c) Dissolved nitrogen in water escaping when water is heated.
d) air dissolving in water.
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Answer:
Dissolved nitrogen in water escaping when water is heated.
Explanation:
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4
Answer:
Dissolved air escaping when water is heated.
Explanation:
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