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प्रश्न
How propanal is converted into propane.
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उत्तर
\[\ce{\underset{(Propanal)}{CH3 - CH2} - CHO + 4[H] ->[Zn-Hg, conc.HCl][Δ] \underset{(Propane)}{CH3 - CH2} - CH3 + H2O}\]
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