Assertion: An alloy is considered as a mixture. Reason: Alloy shows the properties of its constituents and can have variable composition.
If both A and R are true but R is correct explanation of A
If both A and R are true but R is not correct explanation of A
If A is true but R is false
If both A and R are false
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Answer:
both A and R are true and R is the correct explanation of A
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Both assertion and reason are true but reason is correct explanaion of assertion.
Explanation:
- An alloy is a homogenous mixture of two or more metals or non-metals or nonmetals mixed in a molten state.
- It can either be a solid solution of the elements of a single phase or a mixture of two or more metallic phases.
- Solid alloys give a single solid phase microstructure, and are therefore used where their properties are superior to those of pure component elements.
- Separation of components from alloys is not possible physically.
- An alloy is considered as a mixture because it shows the properties of its constituents as well as some improved properties and they can have variable composition.
- They are considered as mixtures because the elements that make it up are physically mixed together, but not chemically combined as in a compound and so they retain properties of its components.
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