Question

(d) The presence of carbon dioxide gas in air can be detected by clear -
which turns milky.
(e) The presence of water vapour in air can be tested by
copper
sulphate, which turns from white to
on coming in contact with water.
(t) Washing down of excess pesticides in natural water causes
pollution

Answer 1

d. calcium hydroxide Can( OH) 2

e.

Answer 2

Answer:

According to me,

d) limewater

e)hydrated,(II)

t)water

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