Which of the following statement(s) is/are incorrect ? I. Zinc can be extracted by self-reduction. II. A depressant prevents certain type of particel of come in the froth . III. Copper matte contains ZnS and ` Cu_2S `. IV. The solidified copper obtained from reverberatory furnance has blistered appearance due to evolution of `SO_2` during the extraction . The option containing incorrect statements isA. I and IIB. II and IIIC. I and IIID. II and IV

Which of the following statement(s) is/are incorrect ? I. Zinc can be

1.	Which of the following statement(s) is/are incorrect ? I. Zinc can be extracted by self-reduction. II. A depressant prevents certain type of particel of come in the froth . III. Copper matte contains ZnS and ` Cu_2S `. IV. The solidified copper obtained from reverberatory furnance has blistered appearance due to evolution of `SO_2` during the extraction . The option containing incorrect statements isA. I and IIB. II and IIIC. I and IIID. II and IV
Answer» Correct Answer - C Copper matte consist of `Cu_2S and FeS`. So, I and III are incorrect .

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