1.

(A) In the case of an ore contaning ZnS and PbS, the one depresant like NaCN is used (R) NaCNprevents ZnS from coming to thefroth

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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