Q23 of 56 Page 118

The first member of alkyne homologous series is:

Alkynes are carbon compounds containing one or more triple bonds. The lowest member (or the first member) is formed by 2 carbon atoms, which is ethyne.

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21

The name of the compound

CH3 — CH2 — CHO is:

 22

The heteroatoms present in

CH3 — CH2 — O — CH2 — CH2Cl are:


(i) oxygen (ii) carbon


(iii) hydrogen (iv) chlorine

 1

Write true or false for the following statements:

Scum is formed due to the reaction of soap with calcium and magnesium salts present in hard water.

 2

Write true or false for the following statements:

Alcohols react with sodium leading to the evolution of carbon dioxide.