HCHO,CH3CHO,CH3COCH3,C6H5CHO,C6H5COCH3 . How many give positive Fehling’s test and also give yellow ppt with Na2CO3+I2

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$HCHO, {CH}_{3} CHO, {CH}_{3} {COCH}_{3}, C_{6} H_{5} CHO, C_{6} H_{5} {COCH}_{3}$ . How many give positive Fehling’s test and also give yellow ppt with ${Na}_{2} {CO}_{3} + I_{2}$

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Detailed Solution

HCHO – Positive Fehling’s test – but can’t give yellow ppt of Iodoform

${CH}_{3} CHO -$ Positive Fehling’s test – yellow ppt of Iodoform
${CH}_{3} {COCH}_{3} -$ Negative Fehling’s test
$C_{6} H_{5} CHO -$ Negative Fehling’s test
$C_{6} H_{5} {COCH}_{3} -$ Negative Fehling’s test