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Which of the following is a source of electrode for aluminum industry?

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Which of the following is a source of electrode for aluminum industry?

(a) Naphtha and fuel oil

(b) LPG

(c) Petroleum coke

(d) Ethane

The question was asked during an interview for a job.

My enquiry is from Synthetic Organic Chemical Industries topic in division Synthetic Organic Chemical Industries of Chemical Technology

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Right option is (c) Petroleum coke

The best explanation: Petroleum coke is a source of electrodes for aluminum electrode and it is also source of carbon for acetylene and calcium carbide. Naphtha and fuel oil, LPG, Petroleum coke are some of the principal raw materials.

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