4. Match the items in column I with those in column II
and write down the matching pairs (some may not
match).
Column 1
Column 11
(a) Acrosome (1) An embryo which looks like
human baby
(b) Gestation (1) Luteinizing hormone
(c) Menopause (ii) Ovum producing cells
(d) Foetus (iv) Semen
(e) Oogenesis (v) Spermatozoa
(1) Ovulation (vi) Complete stoppage of
menstrual cycle
(vii) Time taken by a fertilised
egg till the delivery of baby
Answers
Explanation:
\bold{\mathrm{Fe}+\mathrm{CuSO}_{4} arrow \mathrm{FeSO}_{4}+\mathrm{Cu}}Fe+CuSO
4
arrowFeSO
4
+Cu is a single replacement or displacement reaction.
It is because, in this reaction, the highly reactive metal iron replaces the Copper in copper sulphate by giving up two electrons and gets oxidized and forms a new compound called ferrous sulphate. The copper present in the compound gets reduced by gaining two electrons and is released from it.
As a highly reactive metal (iron) replaces a low reactive metal (copper) in the given reaction it is inferred that \bold{\mathrm{Fe}+\mathrm{CuSO}_{4} arrow \mathrm{FeSO}_{4}+\mathrm{Cu}}Fe+CuSO
4
arrowFeSO
4
+Cu a single replacement or displacement reaction.
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