Q19 of 56 Page 118

Vinegar is a solution of:

5%–8% acetic acid in water

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17

Pentane has the molecular formula C5H12. It has:

 18

Ethanol reacts with sodium and forms two products. These are:

 20

Which of the following does not belong to the same homologous series?

 21

The name of the compound

CH3 — CH2 — CHO is: