Question

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Answer 1

Answer:

1 )

a - This process shows that exhaled air have more amount of carbon dioxide .

b - There was no change in water but lime water became milky due to it's property of desolving carbon dioxide.

2)

a - An electromagnet

b - name of a,b,cand d

(a) a switch (open)

(b) coil or wire

(c) Iron rod / bar /core (choose any one )

(d) a battery