How many of the following will give 2,4-DNP test. (1) \( \mathrm{CH...

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How many of the following will give 2,4-DNP test.
(1) \( \mathrm{CH}_{3} \mathrm{CH}=\mathrm{O} \)
(2) \( \mathrm{CH}_{3}-\mathrm{C}-\mathrm{CH}_{3} \)
(3) \( \mathrm{Ph}-\mathrm{CH}=\mathrm{O} \)
(4)
\( \mathrm{P} \)
(5) Glucose (Aldose)
(6) Fructose (Ketose)
(7) \( \mathrm{HCOOH} \)
(8) \( \mathrm{Ph}-\mathrm{NH}-\mathrm{OH} \)
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