\( 17 \, \text{mg} \) of a hydrocarbon (M.F. \( \mathrm{C_{10}H_{16}} \)) takes up \( 8.40 \, \text{mL} \) of the \( \mathrm{H_2} \) gas measured at \( 0^\circ \text{C} \) and \( 760 \, \text{mm Hg} \). Ozonolysis of the same hydrocarbon yields
The number of double bond/s present in the hydrocarbon is _______.
