Assertion :In the metallurgy of aluminium, purified Al2O3 is mixed with Na3AlF6 or CaF2. Reason: NaAlF6 or CaF2 lowers the melting point of mixture and increases its conductivity.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion NaAlF6 or CaF2 is added to the purified Al2O3 to lowers the melting point of mixture and increase the cinductivity.