Match the ores (Column A) with the metals (Column B).
Column A (Ores)
A. Siderite
B. Kaolinite
C. Ma

Q: Why is Kaolinite considered an ore of Aluminium and not Silicon?

While Kaolinite contains both aluminium and silicon, it is primarily processed to extract aluminium because aluminium is the more valuable metal in this context, and bauxite (the main ore of Al) often contains kaolinite.

Q: Is Calamine a silicate or a carbonate?

Historically, the term 'calamine' was used for both zinc carbonate (smithsonite) and zinc silicate (hemimorphite). However, in standard JEE chemistry, Calamine refers to zinc carbonate ($ZnCO_3$).

Q: How can I easily remember the formula for Malachite?

Malachite is a basic copper carbonate. You can remember it as a combination of copper carbonate and copper hydroxide: $CuCO_3 \cdot Cu(OH)_2$.

Q: What is the difference between Siderite and Magnetite?

Both are ores of iron, but they belong to different chemical families. Siderite is iron carbonate ($FeCO_3$), whereas Magnetite is an iron oxide ($Fe_3O_4$) with magnetic properties.

Q: Do I need to memorize all these formulas for the exam?

Yes, memorizing the chemical formulas of common ores is highly recommended. It is a frequent topic in matching and multiple-choice questions in competitive exams.

Question

Match the ores (Column A) with the metals (Column B). \begin{array}{llll} \hline & 	ext{Column A (Ores)} & & 	ext{Column B (Metals)} \ \hline 	ext{A.} & 	ext{Siderite} & 	ext{P.} & 	ext{Zinc} \ 	ext{B.} & 	ext{Kaolinite} & 	ext{Q.} & 	ext{Copper} \ 	ext{C.} & 	ext{Malachite} & 	ext{R.} & 	ext{Iron} \ 	ext{D.} & 	ext{Calamine} & 	ext{S.} & 	ext{Aluminium} \ \hline \end{array}

Options:

(A) A - P; B- Q; C - R; D- S

(B) A - R; B- S; C - P; D- Q

(C) A - Q; B- R; C - S; D- P

(D) A - R; B- S; C - Q; D- P

Sigma Percentile · Accepted Answer

The study of metallurgy begins with a fundamental understanding of ores—the naturally occurring solid materials from which a metal or valuable mineral can be profitably extracted. In this problem, we are presented with a classic matching challenge: pairing a list of well-known ores with their corresponding primary metals.

### The Matching Challenge

We are given four ores in Column A: Siderite, Kaolinite, Malachite, and Calamine. In Column B, we have the metals: Zinc, Copper, Iron, and Aluminium. To solve this, we must recall the chemical composition of each ore. Let's break them down one by one.

### Decoding the Ores

**1. Siderite**
Siderite is a widespread iron mineral. It is a carbonate ore with the chemical formula $FeCO_3$. Because it contains iron, it is an important source for iron extraction, although less common than oxides like haematite or magnetite. 
Therefore, **Siderite (A)** matches with **Iron (R)**.

**2. Kaolinite**
Kaolinite is a clay mineral, part of the group of industrial minerals. It is a layered silicate mineral, specifically an aluminosilicate, with the chemical formula $Al_2Si_2(OH)_4O_5$. It is a primary ore of aluminium.
Therefore, **Kaolinite (B)** matches with **Aluminium (S)**.

**3. Malachite**
Malachite is a beautiful, green copper carbonate hydroxide mineral. Its striking color has made it historically significant as a pigment and a gemstone. Its chemical formula is $CuCO_3 \cdot Cu(OH)_2$. As the formula suggests, it is a rich source of copper.
Therefore, **Malachite (C)** matches with **Copper (Q)**.

**4. Calamine**
Calamine is a historic name for an ore of zinc. It primarily consists of zinc carbonate, with the chemical formula $ZnCO_3$. It is often found in association with smithsonite and is a key source for zinc extraction.
Therefore, **Calamine (D)** matches with **Zinc (P)**.

### The Final Alignment

By systematically identifying the chemical formula of each ore, we have successfully mapped them to their respective metals:
- **A $\rightarrow$ R** (Siderite $\rightarrow$ Iron)
- **B $\rightarrow$ S** (Kaolinite $\rightarrow$ Aluminium)
- **C $\rightarrow$ Q** (Malachite $\rightarrow$ Copper)
- **D $\rightarrow$ P** (Calamine $\rightarrow$ Zinc)

This sequence perfectly aligns with option (d). Remembering these chemical formulas is not just about solving matching questions; it provides deep insight into the thermodynamic and electrochemical principles required to extract these metals efficiently!

Select Answer:

Visualized Solution

Problem Setup

Siderite

Kaolinite

Malachite

Calamine

Final Match

Conclusion

The Sigma Insight: Ores

The Matching Challenge

Decoding the Ores

The Final Alignment

Similar Questions

Match List-I with List-II. $List I (Metal) A. Aluminium B. Iron C. Copper D. Zinc List II (Ores) 1. Siderite 2. Calamine 3. Kaolinite 4. Malachite$ Choose the correct answer from the options given below.

Match List-I and List-II. $List-I A. Haematite B. Bauxite C. Magnetite D. Malachite List-II 1. Al_{2} O_{3} \cdot x H_{2} O 2. Fe_{2} O_{3} 3. CuCO_{3} \cdot Cu (OH)_{2} 4. Fe_{3} O_{4}$ Choose the correct answer from the options given below.

Match the anionic species given in Column-I that are present in the ore(s) given in Column-II

List-I

List-II

Calamine and malachite, respectively, are the ores of

Match List-I with List-II.

List-I

List-II

Match List-I with List-II. $List-I (Ore) A. Kernite B. Cassiterite C. Calamine D. Cryolite List-II (Element present) (i) Tin (ii) Boron (iii) Fluorine (iv) Zinc$ Choose the most appropriate answer from the options given below.

The one that is not a carbonate ore is

Calamine, malachite, magnetite and cryolite, respectively are

The ore that contains the metal in the form of fluoride is