Chemistry
Assertion (A): Mixtures are impure substances made up of two or more kinds of elements and compounds mixed together in any proportion.
Reason (R): Homogeneous mixtures have a uniform composition throughout their bulk.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Elements, Compounds & Mixtures
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Answer
Both A and R are true but R is not the correct explanation of A.
Explanation — Assertion (A) defines what a mixture is—two or more substances (elements/compounds) physically combined in any proportion, hence "impure."
Reason (R) states a property of one type of mixture (homogeneous = uniform composition). It doesn’t explain why mixtures are impure or their "any proportion" nature, so it isn’t the explanation for Assertion (A).
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Related Questions
Which method is used to separate the components of crude petroleum ?
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Assertion (A): Elements and compounds are pure substances.
Reason (R): Elements and compounds are made up of only one kind of atoms and molecules respectively.
- Both A and R are true and R is the correct explanation of A.
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- A is false but R is true.
Assertion (A): All compounds contain more than one type of element in their molecules.
Reason (R) : Compounds can be homogeneous or heterogeneous.
- Both A and R are true and R is the correct explanation of A.
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- A is true but R is false.
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Assertion (A): Metalloids are the elements showing some properties of metals and some properties of non-metals.
Reason (R): Metalloids are hard solids.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.