Question

An example of a liquid-liquid mixture is

• A. Oil in water
• B. Muddy water
• C. Smoke
• D. Steel

Answer 1

The correct option is A

Oil in water

Mixtures

• A mixture is a material that is made up of two more chemical compounds or substances that do not combine together chemically.
• It is actually the physical combination of two or more substances that are able to retain their identities while they are mixed in form of solutions, suspensions or colloids.
• Mixtures can be classified into homogeneous and heterogeneous mixtures.

Liquid-Liquid mixtures: These are those types of mixtures in which both solute and solvent are liquid.

• Such an example of these types of mixtures is oil in water.

The explanation for the correct answer:

(A) - Oil in water

• Oil in water is a liquid-liquid type of mixture, solute and solvent both are liquid.
• Oil and water form a heterogenous mixture because these two liquids are immiscible with each other.
• Oil molecules are non-polar and hydrophobic while water molecules are polar.
• Oil in water can be separated using a separating funnel.

The explanation for the incorrect answers:

(B) - Muddy water

• Muddy water is solid in a liquid type of mixture
• It is a heterogeneous mixture.
• Separation can be done using filtration

(C) -Smoke

• Smoke is solid in the gas type mixture
• It is a heterogeneous mixture.
• Smokes has different type of gases like nitrogen oxides, oxygen, carbon monoxide, carbon dioxide etc and solid particles like dust ,metals etc.

(D) -Steel

• Steel is a solid type of mixture
• It is a homogeneous mixture.
• Steel is alloy of iron and carbon.

Therefore option (D) is the correct answer.