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Which of the following is not a mixture?
A. Kerosene
B. Air
C. Alcohol
D. Petrol

Last updated date: 23rd Feb 2024
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IVSAT 2024
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Hint: Mixture refers to the term mixing of anything but in chemistry it has a definite meaning which can be described as when two or more substances mix with each other without participating in a chemical change then that resultant substance is known as the mixture.

Complete step by step answer:
 The mixture is made up of two or more substances that are not chemically combined with each other and the result formed due to this combination of different substances does not lose their individuality.
The mixture is basically divided into two types: Heterogeneous mixture and homogeneous mixture where the heterogeneous mixture is that mixture that has different properties and composition in various parts or we can say that composition is not uniform throughout the mixture. On the other hand, homogeneous mixtures are those types of mixtures which have the same composition throughout the whole mixture.
Out of the given examples, we can consider that
A. Kerosene: It is a mixture of hydrocarbons.
B. Air: Air is a mixture of different gases like oxygen, nitrogen, carbon dioxide, etc.
C. Alcohol: Alcohol exists in pure form it is not said to be a mixture.
D. Petrol: Petrol is also a mixture of various hydrocarbons.
So, the correct answer is “Option C”.

Note: The main properties of the mixture are: Components of the mixture maintain their original properties in mixture form too, separation of components is easy and the properties of the components are variable in nature.
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