Question

Match the column:
$\begin{array}{cccc}& & & \\ & Column-I& & Column-II\\ \left(P\right)& Colemaniteore& \left(1\right)& Carbonateandhydroxide\\ \left(Q\right)& Chalcocite& \left(2\right)& Halideore\\ \left(R\right)& Fluorspar& \left(3\right)& Sulphideore\\ \left(S\right)& Azurite& \left(4\right)& Borateore\end{array}$

• A. P - 4 Q - 1 R - 2 S - 3
• B. P - 4 Q - 3 R - 2 S - 1
• C. P - 3 Q - 4 R - 1 S - 2
• D. P - 2 Q - 3 R - 2 S - 1

Answer 1

The correct option is B P - 4 Q - 3 R - 2 S - 1

Colemanite - a borate mineral in its hydrated form - is $Ca{B}_3{O}_4(OH{)}_3\cdot H_{2}O$. Based on the source and constitution, it is also conventionally written as $C{a}_2{B}_6{O}_{11}\cdot 5H_{2}O$.

Chalcocite is $C{u}_{2}S$ - a sulphide ore.
Fluorspar is $Ca{F}_2$ - which is also known as fluorite. Clearly, this is a halide ore!
Azurite is $C{u}_3\left(C{O}_3{)}_2\right(OH{)}_2$ and hence it is both a carbonate as well as a hydroxide ore!
Hence: (P) → (4); (Q) → (3); (P) → (2); (S) → (1);