Question

Siderite is an ore of
$
  A.{\text{ }}Cu \\
  B.{\text{ }}Al \\
  C.{\text{ }}Ag \\
  D.{\text{ }}Fe \\
 $

Answer 1

Hint: We must remember that the ores are a mineral that is composed of metal which can be extracted from the rock. We know the chemical formula of siderite is $FeC{O_3}.$

Complete step by step answer:
Now we see the common ores from which each metal can be extracted.
Copper is generally extracted from the sulfide ores such as Chalcopyrite$\left( {{\text{CuFe}}{{\text{S}}_{\text{2}}}} \right)$, Covelite $\left( {CuS} \right).$ Hence; option (A) is incorrect.
The most common ore in which aluminium is extracted is its Oxide ore called Bauxite. Hence option (B) is incorrect.
Gold occurs on earth as a native metal. Hence option (C) is incorrect.
Iron can be extracted from Hematite, Siderite, and limonite. The carbonate ore of iron is known as Siderite. Siderite is the name of the mineral which is derived from the Greek word sideros which means iron. Siderite mineral contains about iron.
Hence option (D) is correct.

Additional Note:
Chemical and physical properties of siderite:
Siderite is also called chalybite, gyrate, and pelosiderite. It is generally present at sedimentary rocks that are rich in iron content and also present in hydrothermal veins.
Iron inside is replaced by zinc, magnesium, and manganese and forms solid siderite smithsonite, siderite magnesite, and siderite rhodochrosite respectively.
The Oxidation state of iron in iron carbonate is ${\text{ + 2}}{\text{.}}$
The specific gravity of siderite is 3.96
It has a transparent or semi-transparent appearance and has different colors like Brown or brownish-yellow in color, pale yellow to tannish, red, black, yellow-brown in transmitted light, and sometimes colorless.
Siderite has Mohs hardness ranging from 3.75 – 4.25
The crystal structure of the ore is rhombohedral which is generally flattened and curved and it crystallizes in the trigonal crystal system.
Laboratically, Ferrous carbonate is prepared by the reaction of iron (II) chloride and sodium carbonate.
$FeC{l_2} + N{a_2}C{O_3} \to FeC{O_3} + 2NaCl$
By the reaction, iron (II) perchlorates with sodium bicarbonate ferrous carbonate is prepared.
$Fe{\left( {Cl{O_4}} \right)_2} + 2NaHC{O_3}\xrightarrow{{}}2NaCl{O_4} + C{O_2} + {H_2}O$
In contact with warm or strong acid ferrous carbonate gives effervescence due to the evolved carbon dioxide.
When heated siderite acquires magnetic behavior.
The carbonate ores of iron have large importance for the production of steel.

Note:
We must know that the hematite, limonite, siderite is the ores of iron but they vary in their chemical composition and the percentage of iron content. For example, hematite is an oxide ore that contains iron where siderite is a carbonate ore that contains iron.