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Which of the following factors are not used to evaluate the quality of coke?

(a) Size and shape

(b) Moisture

(c) Ignitability

(d) Electrical resistivity

The question was asked in homework.

Query is from Cements, Metallurgical Coke and Synthetic Resins topic in chapter Miscellaneous Materials of Engineering Material & Metallurgy

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Correct option is (d) Electrical resistivity

Explanation: High-quality foundry coke typically contains a reduced amount of volatile matter, ash, and sulfur. This quality is generally determined by evaluating the physical, chemical, and thermal properties of coke.

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