Advertisements
Advertisements
Question
A liquid which decomposes at its boiling point can be purified by ______.
Options
distillation at atmospheric pressure
distillation under reduced pressure
fractional distillation
steam distillation
Solution
A liquid which decomposes at its boiling point can be purified by distillation under reduced pressure.
APPEARS IN
RELATED QUESTIONS
Explain, why an organic liquid vaporises at a temperature below its boiling point in its steam distillation?
Ortho and para – nitro phenol can be separated by ______.
The purity of an organic compound is determined by ______.
Assertion: \[\begin{array}{cc}
\ce{CH - C = CH - COOH}\\|\phantom{.}\\
\phantom{........}\ce{COOC2H5}\end{array}\]
Reason: The principal functional group gets lowest number followed by double bond (or) triple bond.
Give a brief description of the principles of Fractional distillation.
Explain paper chromatography.
The 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 vapour phase. A suitable method for the extraction of these oils from the flowers is ______.
By mistake, an alcohol (boiling point 97°C) was mixed with a hydrocarbon (boiling point 68°C). Suggest a suitable method to separate the two compounds. Explain the reason for your choice.
Assertion (A): Components of a mixture of red and blue inks can be separated by distributing the components between stationary and mobile phases in paper chromatography.
Reason (R): The coloured components of inks migrate at different rates because paper selectively retains different components according to the difference in their partition between the two phases.
A liquid with high boiling point decomposes on simple distillation but it can be steam distilled for its purification. Explain how is it possible?
