Which one of the following pairs can be separated by the use of sodium bisulphite? (a) (b) (c) (...

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Which one of the following pairs can be separated by the use of sodium bisulphite?
(a)
(b)
(c)
(d) \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHO} \) and
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