Answer :

The hexane(C₆H₁₄) is an alkane which has general molecular formula C_nH_2n+2 and it is soluble in benzene and decane(C₁₀H₂₂).

Non-polar compounds are the compounds which do not show the polarity and they cannot form any ions in a solution. In a given options, formula of benzene is C₆H₁₂, oil contains hydroxyl groups in it which are polar. Methanol is also polar in nature due to the hydrogen bond. KCl is a polar compound which forms K⁺ and Cl⁻ ions. According to the principle of like dissolves like, if any substance is polar it should be soluble in polar substance. If any substance is non-polar, then it should be soluble in non-polar. Hence, the compound hexane(C₆H₁₄) is soluble in only benzene and decane(C₁₀H₂₂).

Therefore, hexane(C₆H₁₄) is soluble in benzene and decane(C₁₀H₂₂). Hence, option c and e is correct.

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