Select the reagent used to bring about the following transformation; But -2- ene to ethanal.

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Select the reagent used to bring about the following transformation; But -2- ene to ethanal.

ChemistryAldehydes and KetonesNEET

Options:

A $C r O_{2} C l_{2} / H_{3} O^{+}$
B $K_{2} C r_{2} O_{7}$ in acidic medium
C $O_{3} / H_{2} O$ - Zn dust
D PCC

Solution:

2128 Upvotes Verified Answer

The correct answer is:

O_{3} / H_{2} O

- Zn dust

It is ozonolysis reaction.
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