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A: Bauxite is purified by leaching proce...

A: Bauxite is purified by leaching process
R: Aluminium oxide reacts with NaOH to form soluble sodium meta aluminate.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)

C

If Assertion is true statement but Reason is false, then mark

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements about bauxite and its purification process, we can break down the solution into clear steps: ### Step 1: Understand the Assertion The assertion states that "Bauxite is purified by leaching process." - **Explanation**: Bauxite, which primarily consists of aluminum oxide (Al2O3), undergoes a purification process known as leaching. This process involves treating the ore with a suitable chemical to extract the desired metal. ### Step 2: Understand the Reason The reason states that "Aluminium oxide reacts with NaOH to form soluble sodium meta aluminate." - **Explanation**: In the leaching process, bauxite (Al2O3) is treated with sodium hydroxide (NaOH) and water. This reaction produces sodium meta aluminate (NaAl(OH)4), which is soluble in water. ### Step 3: Write the Chemical Reaction The chemical reaction can be represented as: \[ \text{Al}_2\text{O}_3 + 2 \text{NaOH} + 3 \text{H}_2\text{O} \rightarrow 2 \text{NaAl(OH)}_4 \] - **Balancing the Equation**: The equation is balanced by ensuring that the number of atoms of each element is the same on both sides. ### Step 4: Conclusion Both the assertion and the reason are correct, and the reason provides a correct explanation for the assertion. Therefore, the answer is that both statements are true and the reason is the correct explanation of the assertion. ### Final Answer Both the assertion (A) and the reason (R) are correct, and R is the correct explanation of A. ---
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