Advertisements
Advertisements
प्रश्न
How is a mixture of common salt, oil and water separated? You can use a combination of different methods.
Advertisements
उत्तर
The mixture of common salt, oil and water are taken in a beaker. The salt dissolves in water. Allow it to stand for a few minutes. The mixture of two immiscible liquids is separated by a separating funnel. The oil floats on top. The water can carefully be separated by opening the stopcock in the separating funnel. The oil is left behind in the separating funnel.
The salt water is heated slowly, in a distillation flask with a water condenser. The pure water vapour passes through the inner tube of the condenser.
The vapours on cooling condense into pure water and are collected in a receiver. The salt is left behind in the flask as a residue.
APPEARS IN
संबंधित प्रश्न
What are the characteristic properties of a pure substance? Why do we need them?
Define :- Immiscible liquids
List five characteristics by which compounds can be distinguished form mixtures.
How will you separate a mixture of sodium chloride and sand ?
Define the following:
Heterogeneous mixture
Why do we need pure substances?
Write “true” or “false” for the following statement
Steel is an alloy of iron and aluminum.
The ‘sea-water’ can be classified as a homogeneous as well as a heterogeneous mixture. Comment.
Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.
Supernatant denotes the heterogeneous mixture, lying above a solid residue, after crystallization, precipitation, centrifugation, or another process.
