An unknown compound has molecular formula $C_{6} H_{10}$ .
The unknown reacts with $H_{2}$ in presence of Pt at high temperature to give $C_{6} H_{12}$ . What information does provide about the structure of unknown?
1) It has only one olefinic bond and a cyclic structure
2) It has two olefinic bond and cyclic structure
3) It has aromatic structure with two olefinic bond

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Solution

The unknown reacts with $H_{2}$ in presence of Pt at high temperature to give $C_{6} H_{12}$ .
This indicates presence of a double bond or triple bond in the unknown to which hydrogen is added.
The molecular formula $C_{6} H_{12}$ indicates cyclic nature of hydrocarbon.

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The unknown reacts with H2 in presence of Pt at high temperature to give C6H12. This indicates presence of a double bond or triple bond in the unknown to which hydrogen is added. The molecular formula C6H12 indicates cyclic nature of hydrocarbon.

The unknown reacts with $H_{2}$ in presence of Pt at high temperature to give $C_{6} H_{12}$ .
This indicates presence of a double bond or triple bond in the unknown to which hydrogen is added.
The molecular formula $C_{6} H_{12}$ indicates cyclic nature of hydrocarbon.