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How petroleum is extracted?

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Define petroleum.

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What is percentage of nitrogen in urea?

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How many stages are involved in formation of urea?

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What happens when ammonium carbonate is heated with steam?

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Give the reaction of formation of ammonia in the process.

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Which raw materials are required for the formation of sodium carbonate?

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Why only NaHCO3 precipitates when CO2 is passed through the ammonical brine?

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What do you mean by anode mud?

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Why anode is eaten up in electro-refining process?

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What is blister copper?

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Mention the chemical reaction for the formation of metallic copper in the bessemerization process.

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What is difference between slag and matte?

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How slag and matte are removed from the blast furnace?

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Why lime is added in the smelting process?

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Differentiate between minerals and ores.

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Define concentration process used in metallurgy of copper.

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