The Question is from neet-chemistry basic-chemistry-concepts concentration-methods, and it was created by the author P SRAVAN KUMAR

Question

Which technique is employed to separate two miscible liquids with a significant difference in their boiling points?

P SRAVAN KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
	**Primary Concept**: Separation techniques for mixtures
	**Related Topics**: Distillation, boiling point, miscible liquids
	**Prerequisites**: Understanding of boiling point and the properties of miscible liquids.
## SOLUTION PATHWAY
**Given Information**:
	Two miscible liquids with significantly different boiling points need to be separated.
	Miscible liquids are liquids that can mix in all proportions to form a homogeneous solution.
**Method & Steps**:
	1. Analyze the separation techniques.
		Reasoning: We need a method that exploits the difference in boiling points.
		Simple distillation is suitable for liquids with a large difference in boiling points, but fractional distillation is more efficient when the difference is smaller. Chromatography separates based on differential adsorption, and sublimation is for solids directly changing to gas.
	2. Determine the most appropriate technique.
		Working: Since the question specifies a *significant* difference in boiling points, simple distillation could work, but fractional distillation is generally preferred for better separation, especially if the boiling points are not extremely far apart.  Fractional distillation provides more efficient separation because of its fractionating column, which allows for multiple vaporization-condensation cycles.
		Key Point: The larger the difference in boiling points, the easier the separation.  Fractional distillation is a more refined technique than simple distillation and provides improved separation.
	3. Select the best answer.
		Result: Fractional distillation is the most suitable technique.
		Verification: Fractional distillation is widely used in industry and labs to separate liquids with relatively close boiling points. Simple distillation would be less effective for close boiling points, and chromatography or sublimation are not appropriate for separating miscible liquids.
## OPTION ANALYSIS
A :x: Simple distillation is suitable for liquids with a large difference in boiling points, but fractional distillation is generally more efficient and preferred.
B ✓: Fractional distillation is the most appropriate technique for separating two miscible liquids with a significant difference in their boiling points. It provides a more efficient separation than simple distillation.
C :x: Chromatography is used to separate components based on their differential adsorption to a stationary phase, not their boiling points.
D :x: Sublimation is a phase transition from solid to gas, and it's not applicable for separating liquids.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing simple and fractional distillation: Remember that fractional distillation is used when the boiling points are closer together, offering improved separation.
		2. Choosing inappropriate techniques: Understand the principles behind each separation technique to select the appropriate one based on the properties of the substances being separated.
	**Quick Tips**:
		1. If the boiling points are significantly different, consider simple distillation. If the difference is smaller, fractional distillation is generally better.
		2. Remember that miscible liquids mix completely, unlike immiscible liquids which form separate layers.

P SRAVAN KUMAR · Answer

Simple distillation

P SRAVAN KUMAR · Answer

The correct Option is "Fractional distillation"

P SRAVAN KUMAR · Answer

Chromatography

P SRAVAN KUMAR · Answer

Sublimation

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