Which of the following alkenes on ozonolysis give a mixture of ketones

1.	Which of the following alkenes on ozonolysis give a mixture of ketones only ?
Answer» `CH_3-CH=CH-CH_3` `CH_3-undersetunderset(CH_3)\|CH-CH=CH_2` Solution :Alkenes which have two substituentson each carbon atom of the double BOND, give mixture of ketones on azonolysis , i.e., option (C ) and (d) . On the other hand, alkenes (a) and (B) give a mixture of two aldehydes. (b)`CH_3-undersetunderset(CH_3)\|CH-CH=CH_2 underset((ii)Zn//H_2O)OVERSET((i)O_3//C Cl_4, 196 K)to underset"2-Methylpropanal"(CH_3-undersetunderset(CH_3)\|CH-CH=O)+underset"Methanal"(O=CH)`

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