SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TRUE
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FALSE
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Either A or B
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None of the above
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Detailed explanation-1: -Solution; False. Components in a mixture are present in a varying proportion.
Detailed explanation-2: -The law of constant composition can be used to distinguish between compounds and mixtures of elements: Compounds have a constant composition; mixtures do not.
Detailed explanation-3: -Updated On: 27-06-2022. No, law of constant composition is not true for all types of compounds. It is true for only those compounds which are obtained from one isotope. For example, carbon exists in two common isotopes : 12C and 14C .
Detailed explanation-4: -If we take two or more pure substances and physically mix them together, we refer to this as a mixture. A mixture does not have constant composition or properties throughout.
Detailed explanation-5: -In a mixture, when the constituents are mixed, it is only a physical change and not chemical. A mixture is not a pure substance as its made up of more than one kind of molecules. Also, its constituents retain their properties. A mixture can be either homogeneous or heterogeneous in nature.