Question

Match the minerals in Group I with the corresponding elements in Group II.

Group-I	Group-II
P. Smithsonite	1. Lead
Q. Azurite	2. Iron
R. Crocite	3. Zinc
S. Marcasite	4. Copper

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

Hint:

Recall the chemical formula of each mineral and note which metal it carries: ZnCO3, Cu3(CO3)2(OH)2, PbCrO4, FeS2.

Answer 1

The Correct Option is D

Step 1: Sort the four Group II elements by likely mineral type.
The four metals to place are lead, iron, zinc and copper. Rather than matching one by one, group the minerals by class first: carbonates (smithsonite, azurite), a chromate (crocoite), and a sulphide (marcasite).

Step 2: Handle the two carbonates.
Smithsonite, $ZnCO_3$, carries zinc in its name chemistry, giving smithsonite, zinc. Azurite is famous as a copper carbonate that forms the vivid blue-green stains seen on weathered copper ore bodies, so azurite pairs with copper.

Step 3: Handle the chromate.
Crocoite, $PbCrO_4$, is a lead chromate mineral, historically important as the first source from which chromium itself was identified, and its metal partner here is lead.

Step 4: Handle the sulphide.
Marcasite, $FeS_2$, shares its formula with pyrite but crystallises in the orthorhombic system rather than pyrite's cubic system. Either way, the metal locked in the formula is iron.

Step 5: Write out the full match.
Smithsonite, zinc (P-3); azurite, copper (Q-4); crocoite, lead (R-1); marcasite, iron (S-2). This full set lines up with option (D).
\[ \boxed{\text{P-3; Q-4; R-1; S-2}} \]