Metallurgy

Some word/words are missing/written wrong in the following statement. You are required to rewrite the statement in the correct form using the appropriate word/words Metallurgy deals with production of metals.

The scientific and technological process used for the extraction/isolation of the metal from its ore is called as metallurgy.Following information is given in columns. Column-I:Metal Column-II:Process desirable in metallurgy Column-III: Main reduction process involved in metallurgy Answer the following three questions by appropriately matching the information given in the three column of the above following table. For Ag the only correct combination is :

Explain the following (a) Although Au is soluble in aqua-regia, Ag is not (b) Zinc and hot copper is used for recovery of Ag from the complex [Ag(CN)_(2)]^(-) (c) Aluminium metal is frequently used as a reducing agent for extraction of metal such as chromium manganese etc. (d) Partial roasting of sulphide ore is done in the metallurgy of copper.

Double salts are addition compounds which lose their identity in aqueous solution whereas complexes which are also addition compounds do not lose their identity in aqueous solution. The coordination compounds show isomerism and find applications in photography, qualitative analysis, metallurgy, water purification and in the treatment of various diseases . Which of the following statment is incorrect ?