Question

Match the following pottery given in List-I with the places they belong are mentioned in List-II. \[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Plaster of Paris} & I. \ \text{CaCO}_3 \\ B. \ \text{Silica} & II. \ \text{CaSO}_4 \cdot 1/2H_2O \\ C. \ \text{Calcium Carbonate} & III. \ \text{B}_2\text{O}_3 \\ D. \ \text{Boron} & IV. \ \text{SiO}_2 \\ \hline \end{array} \]

• (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
• (A) - (IV), (B) - (I), (C) - (II), (D) - (III)
• (A) - (III), (B) - (II), (C) - (IV), (D) - (I)
• (A) - (II), (B) - (IV), (C) - (I), (D) - (III)

Hint:

When matching chemicals to their formulas, focus on understanding the basic chemical composition and the common forms of these compounds.

Answer 1

The Correct Option is D

Step 1: Identifying the Materials and their Chemical Formulas.
- Plaster of Paris: Has the chemical formula CaSO\(_4\) \(\cdot\) 1/2H\(_2\)O (Option II).
- Silica: Known as SiO\(_2\) (Option IV).
- Calcium Carbonate: Has the chemical formula CaCO\(_3\) (Option I).
- Boron: Commonly associated with B\(_2\)O\(_3\) (Option III).
Step 2: Conclusion.
Thus, the correct matching is (A) - (II), (B) - (IV), (C) - (I), (D) - (III).