1.

(A)In extraction of Al, Al_(2) O_(3) is concentrated by leaching (R) Leaching removes impurities like SiO_(2), Fe_(2) O_(3)

Answer»

Both (A) and (R) are TRUE and (R) is the CORRECT explanation of (A)
Both (A) and (R) are true and (R) is not the correct EXPLANATIONOF (A)
(A) is true but (R) is FALSE
Both (A) and (R) are false

ANSWER :A


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