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प्रश्न
What is meant by the following term? Give an example of the reaction in the following case.
2, 4-DNP-derivative
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उत्तर
When an aldehyde or ketone reacts with 2, 4-dinitrophenylhydrazine in a weak acidic medium, 2, 4-dinitrophenylhydrazone (2, 4-DNP derivative) is produced.
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\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
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