Nickel, Cobalt, Copper, Iron

Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain: (i) Sodium sulphate (ii) Copper sulphate (iii) Iron (iv) Zinc carbonate Dilute sulphuric acid, Copper, Iron, Sodium, Zinc, Copper carbonate, Sodium carbonate

Choose the correct answer from the options given below : The inert electrode used in the electrolysis of acidified water, is; nickel, Platinum, Copper, Silver

Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong : Iron, Cobalt, Sodium, Copper, Zinc.

Fill in the blanks choosing appropriate word/ words from those given in the brackets : (gravity separation, magnetic separation, absence, presence, CuFeS_2 , Cu_2S , froth flotation, aluminium, iron, smelting, pure, impure, mines, copper, silver, sulfide, zinc, chromium nickel, tin, blister copper, Cus, Fes, thermal, electrical, argentite or silver glance (Ag_2S) , cuprous oxide, cuprous sulfide.) Copper is used in radiators because of its good ......... conductivity.

Fill in the blanks choosing appropriate word/ words from those given in the brackets : (gravity separation, magnetic separation, absence, presence, CuFeS_2 , Cu_2S , froth flotation, aluminium, iron, smelting, pure, impure, mines, copper, silver, sulfide, zinc, chromium nickel, tin, blister copper, Cus, Fes, thermal, electrical, argentite or silver glance (Ag_2S) , cuprous oxide, cuprous sulfide.) Copper obtained from Bessemer converter is known as.......

Sillicon, Cobalt, Sodium and Selenium are