Q17 / 160 · TS EAMCET 2023 (13 May Shift 1) · Chemistry

An alkene $(\mathrm{X})$ on ozonolysis gives propanal and ethanal. What is $\mathrm{X}$ ?

  • Correct answer
    A
    Pent-2-ene
  • B
    Pent-1-ene
  • C
    But-1-ene
  • D
    But-2-ene

Solution

The products of ozonolysis are:- $$ \mathrm{CH}_3-\mathrm{CHO} $$ ethanal $$ \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CHO} $$ $$ \begin{aligned} & \Rightarrow \mathrm{X}=\mathrm{CH}_3 \mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_3 \\ & \text { as }>\mathrm{C}=\mathrm{C} < \xrightarrow{\text { ozonolysis }}>\mathrm{C}=\mathrm{O}+\mathrm{O}=\mathrm{C} < \end{aligned} $$

Hence, the correct answer is option: 'A'.

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