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Assertion: Alumina is obtained from bauxite through the Bayer process.
Reasoning: The Bayer process involves the leaching of bauxite with sodium hydroxide solution, followed by the precipitation of aluminum hydroxide, which is then calcined to obtain alumina.
Both the assertion and reasoning are true, and the reasoning is the correct explanation of the assertion.
Both the assertion and reasoning are true, but the reasoning is not the correct explanation of the assertion.
The assertion is true, but the reasoning is false.
Both the assertion and reasoning are false.
Answers (1)
The assertion states that alumina is obtained from bauxite through the Bayer process. This statement is true.
The reasoning provided explains the steps involved in the Bayer process and how it leads to the production of alumina. The Bayer process does involve the leaching of bauxite (which is the main source of aluminum) with sodium hydroxide solution. This leaching process allows for the dissolution of alumina (aluminum oxide) from the bauxite. The reasoning goes on to mention that the aluminum hydroxide precipitates from the sodium aluminate solution formed during the leaching step. This precipitate is then calcined (heated) to obtain alumina (aluminum oxide).
The Bayer process is the most commonly used industrial method for extracting alumina from bauxite, and it is widely employed in the aluminum industry.
Therefore, both the assertion and reasoning are true, and the reasoning provides the correct explanation for the assertion. Hence, option 1 is the correct choice.
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