Chemistry
Assertion (A): The concentration of aluminium is not done by leaching process.
Reason (R): In leaching process, the ore is dissolved in an acid or alkali
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Metallurgy
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Answer
A is false but R is true.
Explanation — The leaching method is used for the concentration of metals like aluminium, silver and gold. Hence, assertion (A) is false.
The ore is treated with a suitable reagent like acid, base or some other reagent, such that the ore is soluble in it but the impurities are not. The impurities are removed by filtration. Hence, reason (R) is true.
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