[B] Match the solutions in Column-I with their nature in Column-II :
`{:(,"Column-I",,"Column-II"),("(a)","Benzene + toluene","(p)","Non-ideal solution"),("(b)","Ethanol + water","(q)","Ideal solution"),("(c)","Benzene + chloroform","(r)",DeltaH_("mix")gt0),("(d)","Carbon tetrachloride + chloroform","(s)",DeltaH_("mixing")=0):}`

Answer

To solve the problem of matching the solutions in Column-I with their nature in Column-II, we need to analyze each combination based on the properties of the solutions.

### Step-by-Step Solution:

1. **Identify the nature of the solution for (a) Benzene + Toluene:**
- Benzene and toluene are known to form an ideal solution. This is because they have similar molecular structures and interactions.
- **Match:** (a) Benzene + Toluene → (q) Ideal solution.

2. **Identify the nature of the solution for (b) Ethanol + Water:**
- Ethanol and water form a non-ideal solution due to hydrogen bonding between the molecules, which results in a positive deviation from Raoult's law.
- The enthalpy of mixing (ΔH_mix) for this combination is positive.
- **Match:** (b) Ethanol + Water → (p) Non-ideal solution and (r) ΔH_mix > 0.

3. **Identify the nature of the solution for (c) Benzene + Chloroform:**
- Benzene and chloroform also form a non-ideal solution. However, this combination exhibits a negative deviation from Raoult's law due to stronger interactions between the molecules.
- The enthalpy of mixing (ΔH_mix) for this combination is negative.
- **Match:** (c) Benzene + Chloroform → (p) Non-ideal solution and (r) ΔH_mix < 0.

4. **Identify the nature of the solution for (d) Carbon Tetrachloride + Chloroform:**
- Carbon tetrachloride and chloroform form an ideal solution, as they have similar polarities and do not exhibit significant deviations from Raoult's law.
- The enthalpy of mixing (ΔH_mix) for this combination is zero.
- **Match:** (d) Carbon Tetrachloride + Chloroform → (q) Ideal solution and (s) ΔH_mix = 0.

### Final Matches:
- (a) Benzene + Toluene → (q) Ideal solution
- (b) Ethanol + Water → (p) Non-ideal solution, (r) ΔH_mix > 0
- (c) Benzene + Chloroform → (p) Non-ideal solution, (r) ΔH_mix < 0
- (d) Carbon Tetrachloride + Chloroform → (q) Ideal solution, (s) ΔH_mix = 0