Question

Which among the following is/are ore/ores of iron?

• A. The oxide ore is primarily reduced to iron by solid coke according to the reaction
• B. The oxide ore reduced largely by Carbon monoxide
• C. Major silica impurities are removed as calcium silicate slag by addition of the fluxing agent limestone.
• D. The silicate slag is used in manufacture of cement

Answer 1

Answer: (A), (B), (C)

The correct options are
A

The oxide ore is primarily reduced to iron by solid coke according to the reaction

B

The oxide ore reduced largely by Carbon monoxide

C

Major silica impurities are removed as calcium silicate slag by addition of the fluxing agent limestone.

The mineral from which a metal can be readily and economically extracted on a large scale is said to be an ore. Some example of ores of iron are:
$Haematite\left(F{e}_2{O}_3\right)$
$Magnetite\left(F{e}_3{O}_4\right)$
$Ironpyrite\left(Fe{S}_2\right)$
$Siderite\left(FeC{O}_3\right)$
$Magnesite\left(MgC{O}_3\right)isanoreofmagnesium.$