Concept:
A solution is a homogeneous mixture of two or more substances.
It consists of:
Solvent = component present in larger amount
Solute = component present in smaller amount
Solutions are classified according to the physical states of solute and solvent.
Step 1: Nature of gasoline
Gasoline (petrol) is a homogeneous mixture mainly containing:
Pentane
Hexane
Heptane
Octane
Other liquid hydrocarbons
All these components are liquids under ordinary conditions.
Step 2: State of solvent and solute
Since gasoline is formed by mixing liquid hydrocarbons:
\[
\text{Solvent} = \text{Liquid}
\]
\[
\text{Solute} = \text{Liquid}
\]
Thus it is a liquid-in-liquid solution.
Step 3: Check options
Liquid in Liquid \quad $\checkmark$
Liquid in Solid \quad $\times$
Solid in Liquid \quad $\times$
Gas in Liquid \quad $\times$
Step 4: Final Answer
Gasoline is an example of:
\[
\boxed{\text{Liquid as solute and liquid as solvent
\]
Quick Tip:
Mixture of miscible liquids like alcohol + water or hydrocarbons + hydrocarbons gives liquid-liquid solution.