Which one of the following statements is correct?

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Which one of the following statements is correct?

Alloys are mixtures.
Alloys are compounds.
Alloys are always made up of metals.
All alloys contain carbon as one of their components.
This question was previously asked in
UPSC CAPF – 2023
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An alloy is a metallic substance composed of two or more elements, at least one of which is a metal. It is typically formed by mixing molten components. Alloys are considered mixtures because their constituent elements are not chemically bonded in a fixed ratio throughout the material; their properties are a combination of the properties of the constituents, and they can often be separated by physical means. Option B is incorrect as alloys are mixtures, not compounds. Option C is incorrect as alloys can include non-metals (like carbon in steel). Option D is incorrect as many alloys do not contain carbon (e.g., brass is copper and zinc).
Alloys are physical mixtures of metals or metals and non-metals.
The properties of alloys often differ significantly from those of their constituent elements. For example, steel (iron and carbon) is much stronger than pure iron, and brass (copper and zinc) is harder than either copper or zinc.

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