COMEDK · Chemistry · 21. General Principles and Processes of Isolation of Metals

Which of the following is used to prepare the inner lining of a blast furnance?

A Graphite bricks
B Silica bricks
C Fire clay bricks
D basic bricks

Verified Solution

Answer & Solution

Correct Answer

(C) Fire clay bricks

Step-by-step Solution

Detailed explanation

The inner lining of a blast furnace is subjected to extremely high temperatures and chemical reactions. It is constructed using refractory materials that can withstand these conditions. Fire clay bricks, which are composed primarily of silica and alumina, are commonly used for…

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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B	Epinephrine	Q	Steroid hormone.
C	Estrogen	R	Iodinated derivative of Tyrosine amino acid.
D	Thyroxine	S	Its malfunction causes Addison's disease.

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