MHT CET · Chemistry · s Block Elements

Identify the ore of magnesium from following?

A Siderite
B Calamine
C Limonite
D Dolomite

Verified Solution

Answer & Solution

Correct Answer

(D) Dolomite

Step-by-step Solution

Detailed explanation

Magnesium is found in minerals such as magnesite, dolomite, brucite, serpentinite, etc. and is mostly recovered from seawater, brines and bitterns . Dolomite ore is considered one of the most suitable ores for obtaining magnesium and its various compounds.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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