Assertion :In the metallurgy of aluminium, purified $A l_{2} O_{3}$ is mixed with $N a_{3} A l F_{6}$ or $C a F_{2}$ . Reason: $N a A l F_{6}$ or $C a F_{2}$ lowers the melting point of mixture and increases its conductivity.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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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
$N a A l F_{6}$ or $C a F_{2}$ is added to the purified $A l_{2} O_{3}$ to lowers the melting point of mixture and increase the cinductivity.

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Similar questions

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{SiO}_{2}

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Assertion: All the points (1, 0), (-1, 0), (2, 0) and (5, 0) lie on the x – axis.
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Choose the correct option.

Assertion (A) Phenols give o-and p-nitrophenol on nitration with conc. $H N O_{3} a n d H_{2} S O_{4}$ mixture.
Reason (R) - OH group in phenol is o-,p-directing.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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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.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionNaAlF6 or CaF2 is added to the purified Al2O3 to lowers the melting point of mixture and increase the cinductivity.

Assertion :In the metallurgy of aluminium, purified $A l_{2} O_{3}$ is mixed with $N a_{3} A l F_{6}$ or $C a F_{2}$ . Reason: $N a A l F_{6}$ or $C a F_{2}$ lowers the melting point of mixture and increases its conductivity.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$N a A l F_{6}$ or $C a F_{2}$ is added to the purified $A l_{2} O_{3}$ to lowers the melting point of mixture and increase the cinductivity.