A mixture of two completely miscible non-ideal liquids which distil as such without change in its composition at a constant temperature as though it were a pure liquid. This mixture is known as

Binary liquid mixture

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Azeotropic mixture

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Eutectic mixture

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ideal mixture

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Solution

The correct option is B Azeotropic mixture
Some liquids on mixing, form azeotropes which are binary mixtures having the same composition in liquid and vapour phase and boil at a constant temperature. In such cases, it is not possible to separate the components by fractional distillation. This mixture is known as Azeotropic mixture

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Question 36
Components of a binary mixture of two liquids A and B were being separated by distillation. After some time separation of components stopped and composition of vapour phase became same as that of liquid phase. Both the components started coming in the distiliate. Explain why this happened?

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