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A: Calamine and Dolomite are the carbon...

A: Calamine and Dolomite are the carbonate ores.
R: Calamine is `ZnCO_3` whereas Dolomite is `MgCO_3` `ZnCO_3`

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)

C

If Assertion is true statement but Reason is false, then mark

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statement and reason provided in the question, we will break down the information step by step. ### Step 1: Identify the Assertion The assertion states that "Calamine and Dolomite are the carbonate ores." **Hint:** Look for definitions or characteristics of carbonate ores to validate this assertion. ### Step 2: Validate the Assertion Calamine is indeed a carbonate ore, specifically known as zinc carbonate (ZnCO₃). Dolomite is also a carbonate mineral, but it is primarily composed of calcium magnesium carbonate (CaMg(CO₃)₂). Therefore, the assertion is partially correct as it identifies both as carbonate ores. **Hint:** Check the chemical formulas of the mentioned ores to confirm their classification. ### Step 3: Identify the Reason The reason provided states that "Calamine is ZnCO₃ whereas Dolomite is MgCO₃ ZnCO₃." **Hint:** Analyze the chemical composition mentioned in the reason to determine its accuracy. ### Step 4: Validate the Reason The reason states that Calamine is ZnCO₃, which is correct. However, it incorrectly states that Dolomite is MgCO₃ ZnCO₃. The correct formula for Dolomite is CaMg(CO₃)₂, not a combination of magnesium and zinc carbonate. Therefore, the reason is false. **Hint:** Compare the chemical formulas given in the reason with the accepted chemical formulas of the minerals. ### Step 5: Conclusion Since the assertion is true (both Calamine and Dolomite are carbonate ores), but the reason is false (the chemical formula for Dolomite is incorrect), we can conclude that the correct answer is that the assertion is true, but the reason is false. **Final Answer:** The correct option is that the assertion is true, but the reason is false.
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