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Assertion 'a' During casting of aluminium grain refinement can be achieved...

This question belongs to Metallurgical Engineering Foundry Metallurgy
Foundry Metallurgy
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Assertion 'a': During casting of aluminium, grain refinement can be achieved by addition of certain alloying elements.
Reason 'r': The addition of the alloying elements may result in the formation of deoxidation products or intermetallic compounds which may act as nucleation sites for grain refinement.

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Correct Answer: Option A
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