For haematite ore………………. is used as fuel and …………. is used as flux.

…………….. furnace is used for roasting.

…………….. is the part of furnace where the fuel is kept for burning.

In……………..furnace both firebox and hearth are combined in big chamber which accommodates both ore and fuel.

…………….. furnace has both firebox and hearth separated.

In……………..furnace there is no direct contact between the hearth and firebox.

Thermite reaction involves reaction of metal oxide with ……………

The reducing agent used to join railings of railway tracks is ……………..

In electrolysis the reaction that takes place at cathode is ……………..

The impurities present in the metal are oxidized in this method ……………..