Which purification technique is MOST suitable for separating a thermally unstable liquid organic compound from a non-volatile impurity?
Simple distillation
Fractional distillation
Steam distillation
Vacuum distillation
Related Questions
Sublimation can't be used for purification of
Benzoic acid
Camphor
Urea
Naphthalene
Paper chromatography is an example of
Adsorption chromatography
Partition chromatography
Thin layer chromatography
Column chromatography
Which of the substance is purified by sublimation?
Benzoic acid
Camphor
Naphthalene
All of these
Chromatography is a valuable method for the separation, purification and identification of the constituents of a mixture and it is based on general principle of
Differential affinities of the components of a mixture towards the stationary and mobile phases
Differences in the boiling points of the components of a mixture
Differences in the densities of the components of a mixture
Differences in the solubilities of the components of a mixture
Some organic compounds are purified by distillation at low pressure because the compounds are
Low boiling liquids
high boiling liquids
highly volatile
dissociated before reaching their boiling points
Which of the following methods is most suitable for purifying a metal that is liquid at room temperature?
Liquation
Electrolysis
Zone refining
Fractional distillation
The relative adsorption of each component of the mixture is expressed in terms of
adsorption factor
retention factor
co-factor
sorption factor
In the context of separating a mixture of ortho and para nitrophenols, what makes ortho-nitrophenol more amenable to steam distillation?
Higher molecular weight
Intermolecular hydrogen bonding
Lower melting point
Intramolecular hydrogen bonding
You are purifying a sample containing p-nitroaniline and o-nitroaniline. Exploiting the difference in their basicity, which method would be most effective for separating these isomers?
Fractional distillation
Simple recrystallization from water
Dissolving the mixture in dilute HCl and then selectively precipitating p-nitroaniline by careful neutralization with dilute NaOH
Steam distillation
Naphthalene can be easily purified by
Sublimation
Crystallisation
Distillation
Vaporisation
