#distillation

Chemical Reactions of Alcohols - Dehydration Oxidation Esterification

Which phenol derivative is steam volatile?

2-Nitrophenol is steam volatile due to intramolecular hydrogen bonding between -OH and -NO₂, reducing intermolecular forces, unlike 4-nitrophenol.

Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification

View Details

Purification Methods - Crystallization Distillation Chromatography

Which technique is used to purify an organic liquid with a boiling point significantly different from its impurities?

Simple distillation is effective for separating liquids with boiling point differences > 25°C.

Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography

View Details

Purification Methods - Crystallization Distillation Chromatography

Which method is used to separate a mixture of organic liquids with boiling points differing by more than 30°C?

Simple distillation is suitable for separating liquids with boiling point differences greater than 25–30°C.

Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography

View Details

Purification Methods - Crystallization Distillation Chromatography

Which method is used to separate a mixture of two liquids with different boiling points?

Distillation separates liquids based on differences in their boiling points, vaporizing the lower boiling point liquid first.

Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography

View Details

Purification Methods - Crystallization Distillation Chromatography

Which purification technique is most suitable for separating a mixture of CHCl₃ (b.p. 61°C) and CH₃COCH₃ (b.p. 56°C)?

Fractional distillation separates liquids with close boiling points (difference < 25°C) using a fractionating column.

Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography

View Details

Purification Methods - Crystallization Distillation Chromatography

A mixture of two liquids with boiling points 75°C and 90°C is separated efficiently on a large scale using which techniq

A 15°C difference (< 25°C) requires fractional distillation for efficient large-scale separation due to close boiling points.

Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography

View Details

Purification Methods - Crystallization Distillation Chromatography

Which technique is most suitable for separating a mixture of C₆H₆ (b.p. 80°C) and C₇H₈ (b.p. 110°C)?

Simple distillation is used for liquids with boiling point differences > 25°C, like benzene (80°C) and toluene (110°C).

Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography

View Details

Purification Methods - Crystallization Distillation Chromatography

Which separation technique is most suitable for a mixture of two liquids with boiling points 65°C and 95°C, where one is

Differential extraction can exploit solubility differences (e.g., water vs. organic solvent), while the 30°C boiling point difference also allows simple distillation, but solubility makes extraction more specific.

Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography

View Details