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Identify A, B, C and D in the following ...

Identify A, B, C and D in the following steps of the reaction of acetal-dehyde with dilute aqueous solution of NaOH: `CH_3CHO+OHharrA+B`, `CH_3CHO+AharrC`, `C+BharrD+OH`.

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2018-EXAMPLE
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