1.

In the following reaction sequence, the correct stracture of X, Y and Z are : `H-C-=C-COOHoverset(HgSO_(4)//H_(2)SO_(4)//H_(2)O)underset((1))to (X) overset("Heating")underset((2))to(Y) overset(I_(2)//NaOH)to (Z)+CHI_(3)`A. B. `{:(H_(2)=CH-COOH" ",CH_(3)-underset(OH)underset(|)(CH)-COOH" ",underset(COONa)underset(|)(COONa)):}`C. `{:(CH_(3)=underset(O)underset(||)(C)-COOH" ", CH_(3)=CH-O" ", HCOONa):}`D. `{:(O-CH-CH_(2)-COOH" ",CH_(3)-CH=O" ",HCOONa):}`

Answer» Correct Answer - D
`X=H-overset(O)overset(||)(C)-CH_(2)-overset(O)overset(||)(C)-OH ` , Y=H-overset(O)overset(||)(C)-CH_(3) Z=HCOONa`
(`beta-` keto carbozylic acid under go decarboxylation on heating Followed by Iodoform reaction)


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