Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationPurification of Organic Compounds
MediumState whether the following statements regarding steam distillation at reduced pressure are True or False:
$i$. It is used in the soap industry.
$ii$. Water pumps,vacuum pumps,or air pumps are used.
$iii$. Liquids with high boiling points do not decompose.
$iv$. The liquid is decomposed.
$v$. The liquid is boiled at a low temperature.
$i$. It is used in the soap industry.
$ii$. Water pumps,vacuum pumps,or air pumps are used.
$iii$. Liquids with high boiling points do not decompose.
$iv$. The liquid is decomposed.
$v$. The liquid is boiled at a low temperature.
(A) The correct statements are:
$i$. True (It is used to separate glycerol from spent lye in the soap industry).
$ii$. False (Vacuum pumps are used,but air pumps are generally not used for this purpose).
$iii$. True (Distillation at reduced pressure prevents the decomposition of heat-sensitive substances).
$iv$. False (The process is specifically designed to prevent decomposition).
$v$. True (Reducing the pressure lowers the boiling point of the liquid).
Summary: $i-T, ii-F, iii-T, iv-F, v-T$.
$i$. True (It is used to separate glycerol from spent lye in the soap industry).
$ii$. False (Vacuum pumps are used,but air pumps are generally not used for this purpose).
$iii$. True (Distillation at reduced pressure prevents the decomposition of heat-sensitive substances).
$iv$. False (The process is specifically designed to prevent decomposition).
$v$. True (Reducing the pressure lowers the boiling point of the liquid).
Summary: $i-T, ii-F, iii-T, iv-F, v-T$.
Explore More
Similar Questions
Which of the following statements are correct?
$A$. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.
$B$. Aniline is purified by steam distillation as it is immiscible in water.
$C$. Ethanol can be separated from an ethanol-water mixture by azeotropic distillation because it forms an azeotrope.
$D$. An organic compound is pure if the mixed $M.P.$ remains the same.
Choose the most appropriate answer from the options given below:
$A$. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.
$B$. Aniline is purified by steam distillation as it is immiscible in water.
$C$. Ethanol can be separated from an ethanol-water mixture by azeotropic distillation because it forms an azeotrope.
$D$. An organic compound is pure if the mixed $M.P.$ remains the same.
Choose the most appropriate answer from the options given below:
Explain partition chromatography. What is partition chromatography? Describe paper chromatography.
Difficult
View SolutionThe fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in the vapour phase. $A$ suitable method for the extraction of these oils from the flowers is:
DifficultJEE MAIN 2024
View SolutionUsing column chromatography,a mixture of two compounds '$A$' and '$B$' was separated. '$A$' eluted first,this indicates '$B$' has
The purification method based on the following physical transformation is $:$
$\text{Solid} (X)$ $\xrightarrow{\text{Heat}} \text{Vapour} (X)$ $\xrightarrow{\text{Cool}} \text{Solid} (X)$
$\text{Solid} (X)$ $\xrightarrow{\text{Heat}} \text{Vapour} (X)$ $\xrightarrow{\text{Cool}} \text{Solid} (X)$
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo