Match List-I with List-II.

List-I
A. Siderite
B. Calamine
C. Malachite
D. Cryolite

List-II
(i) Cu

Q: Is Malachite just a simple carbonate ore?

No, Malachite is a basic carbonate ore. Its formula is $\text{CuCO}_3 \cdot \text{Cu(OH)}_2$, meaning it contains both carbonate and hydroxide groups.

Q: Why is Cryolite so important in metallurgy?

Cryolite ($\text{Na}_3\text{AlF}_6$) is crucial in the Hall-Heroult process. It is added to alumina to lower the melting point of the mixture and increase its electrical conductivity, making aluminium extraction possible.

Q: How can I memorize these ore formulas easily?

Grouping them by their anion type is a great strategy. For example, Siderite ($\text{FeCO}_3$) and Calamine ($\text{ZnCO}_3$) are both simple carbonates, while Malachite is a basic carbonate.

Q: Are there other important ores of Iron I should know?

Absolutely! Besides Siderite, you should remember Haematite ($\text{Fe}_2\text{O}_3$), Magnetite ($\text{Fe}_3\text{O}_4$), and Iron Pyrites ($\text{FeS}_2$).

Q: What's the difference between Calamine and Malachite?

Calamine is an ore of Zinc ($\text{ZnCO}_3$), while Malachite is an ore of Copper ($\text{CuCO}_3 \cdot \text{Cu(OH)}_2$). They belong to completely different metals.

Question

Match List-I with List-II.

$\begin{array}{ll}
	ext{List-I} & 	ext{List-II} \
	ext{A. Siderite} & 	ext{(i) Cu} \
	ext{B. Calamine} & 	ext{(ii) Ca} \
	ext{C. Malachite} & 	ext{(iii) Fe} \
	ext{D. Cryolite} & 	ext{(iv) Al} \
& 	ext{(v) Zn}
\end{array}$

Choose the correct answer from the options given below.

Options:

(A) A $ightarrow$ (iii), B $ightarrow$ (i), C $ightarrow$ (v), D $ightarrow$ (ii)

(B) A $ightarrow$ (i), B $ightarrow$ (ii), C $ightarrow$ (v), D $ightarrow$ (iii)

(C) A $ightarrow$ (iii), B $ightarrow$ (v), C $ightarrow$ (i), D $ightarrow$ (iv)

(D) A $ightarrow$ (i), B $ightarrow$ (ii), C $ightarrow$ (iii), D $ightarrow$ (iv)

Sigma Percentile · Accepted Answer

### The Art of Matching Ores

Welcome to a fascinating journey into the world of metallurgy! In this problem, we are tasked with matching a list of famous ores to their corresponding metals. While this might seem like a simple memory test, each of these ores carries a rich history and unique chemical properties that make them indispensable to modern industry. Let's break them down one by one.

### Siderite: The Iron Carbonate

Our first candidate is **Siderite**. The name itself is derived from the Greek word *sideros*, which means iron. Siderite is a valuable iron mineral composed of iron(II) carbonate, chemically represented as $	ext{FeCO}_3$.

Because it contains no sulfur or phosphorus, it is highly prized for producing high-quality iron. When you see Siderite, you should immediately think of Iron (Fe). Therefore, we confidently match **A $ightarrow$ (iii)**.

### Calamine: The Zinc Healer

Next up is **Calamine**. If the name sounds familiar, you might be thinking of calamine lotion, which is used to soothe skin irritations! Historically, the term calamine was used for zinc ores.

Chemically, Calamine is a carbonate ore of zinc, with the formula $	ext{ZnCO}_3$. It is often found in the oxidation zones of zinc ore deposits. Knowing this, the connection is crystal clear: Calamine is an ore of Zinc (Zn). Thus, we match **B $ightarrow$ (v)**.

### Malachite: The Green Copper

Third on our list is the stunningly beautiful **Malachite**. Known for its vibrant green color, malachite has been used as a gemstone and a pigment for thousands of years.

From a chemical standpoint, Malachite is not just a simple carbonate; it is a **basic carbonate** of copper. Its formula is $	ext{CuCO}_3 \cdot 	ext{Cu(OH)}_2$. The presence of copper is undeniable. Consequently, we match Malachite to Copper (Cu), giving us **C $ightarrow$ (i)**.

### Cryolite: The Ice Stone of Aluminium

Finally, we arrive at **Cryolite**. The name translates to "ice stone" because it looks like frozen water. Unlike the previous ores which were carbonates, Cryolite is a complex halide ore, specifically sodium hexafluoroaluminate, $	ext{Na}_3	ext{AlF}_6$.

Cryolite plays a legendary role in metallurgy. It is added to bauxite during the Hall-Heroult process to lower the melting point of the mixture and increase its electrical conductivity, making the extraction of aluminium economically viable. Naturally, Cryolite matches with Aluminium (Al), leading to **D $ightarrow$ (iv)**.

### Bringing It All Together

By understanding the chemical formulas and the stories behind these ores, the matching process becomes intuitive rather than rote memorization.

Our final sequence is:
- **A $ightarrow$ (iii)**
- **B $ightarrow$ (v)**
- **C $ightarrow$ (i)**
- **D $ightarrow$ (iv)**

This perfectly aligns with option (c). Mastering these formulas is a crucial stepping stone in your chemistry journey!

Select Answer:

Visualized Solution

$Visual Anchor$

$Siderite Formula$

$Matching Siderite$

$Calamine Formula$

$Matching Calamine$

$Malachite Formula$

$Matching Malachite$

$Cryolite Formula$

$Matching Cryolite$

$Final Conclusion$

The Sigma Insight: Ores

The Art of Matching Ores

Siderite

Calamine

Malachite

Cryolite

Bringing It All Together

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.