SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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peanuts
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milk
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gold
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air
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Detailed explanation-1: -Gold is a pure substance because it is an element and consists of only one type of atom. Air, peanuts, and milk are mixtures of different substances and are not pure. Therefore, the best example of a pure substance is gold.
Detailed explanation-2: -Element: An element is a pure substance made up of only the same type of particles or atoms. It can not be split into simpler substances by chemical means. For example, Gold, Silver, and Hydrogen .
Detailed explanation-3: -Answer and Explanation: Gold (Au) is an element whose atomic number is 79, so gold is classified as a pure substance because elements are composed only of the atoms of the same element (or are composed of the same type of particles) and are considered pure substances.