Diols (I-IV) which react with CrO_3 in aqueou | vedclass

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(C) $CrO_3$ in aqueous $H_2SO_4$ (Jones reagent) is a strong oxidizing agent that oxidizes primary alcohols to carboxylic acids and secondary alcohols

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$II$ and $IV$

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(C) $CrO_3$ in aqueous $H_2SO_4$ (Jones reagent) is a strong oxidizing agent that oxidizes primary alcohols to carboxylic acids and secondary alcohols to ketones.$(II)$ is a primary diol: $HO-CH_2-CH(CH_3)-CH_2-OH$. Oxidation gives a gem-dicarboxylic acid: $HOOC-CH(CH_3)-COOH$. Gem-dicarboxylic acids readily undergo decarboxylation on heating.$(IV)$ is a secondary-primary diol: $CH_3-CH(OH)-CH_2-CH_2-OH$. Oxidation gives a $\beta$-keto acid: $CH_3-CO-CH_2-COOH$. $\beta$-keto acids readily undergo decarboxylation on heating to form ketones.Thus,$(II)$ and $(IV)$ satisfy the given conditions.

column $-I$	column $-II$
$(A)$ Antifreeze used in car engine	$(1)$ Neutral $FeCl_3$
$(B)$ Solvent used in perfumes	$(2)$ Glycerol
$(C)$ Starting material for picric acid	$(3)$ Methanol
$(D)$ Wood spirit	$(4)$ Phenol
$(E)$ Reagent used for detection of phenolic group	$(5)$ Ethylene glycol
$(F)$ By-product of soap industry used in cosmetics	$(6)$ Ethanol

Diols $(I-IV)$ which react with $CrO_3$ in aqueous $H_2SO_4$ and yield products that readily undergo decarboxylation on heating,are

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