SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pure Substance
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Mixture
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Either A or B
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None of the above
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Detailed explanation-1: -Pure substances: Graphite, Diamond, Distilled water, Oxygen, Iron, Sodium chloride, 22 carat gold. Mixtures : Air, Milk, Gasoline, Tap water, One rupee coin, Steel, Iodised table salt.
Detailed explanation-2: -Despite the fact that air is a mixture of several gases, it is a homogeneous mixture since it seems uniform everywhere and its constituents are difficult to detect. Furthermore, simple mechanical methods are unable to separate distinct components of air. Hence, it is classified as a homogenous mixture.
Detailed explanation-3: -A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.
Detailed explanation-4: -Examples of pure substances include iron, aluminum, silver, and gold. Mixtures: Substances that have two or more different particles are mixtures. Examples of mixture include the salt solution which is a ‘mixture’ of two components, salt, and water.