1.

Which ofthefollowingstatementsare correct ?

Answer»

A depressancepreventscertaintype ofparticle tocometothefroth
Coppermatte CONTAIN`CU _2 S and ZnS`
Thesolidifiedcopperobtainedfrom reverberatoryfurnancehasblisteredappearanceduetoevolutionof`SO _ 2`duringtheextraction
Zinc can beextractedby SELF - reduction .

Answer :A::C


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