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Although carbon and hydrogen are better ...

Although carbon and hydrogen are better reducing agents but they are not used to reduce metallic oxides at high temperatures. Why?

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Because at hight temperature, carbon and hydrogen react with matals to form carbides and hydrides respectively. So, carbon and hydrogen are not better reducing agents to reduce metallic oxides.
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NCERT EXEMPLAR-GENERAL PRINCIPLE AND PROCESSES OF ISOLATION OF ELEMENTS -General Principle And Processes Of Isolation Of Elements
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  2. Write two basic requirements for refining of a metal by Mond process a...

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  4. How do we separate two sulphide ores by Froth Floatation Method? Expla...

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  5. The purest form of iron is prepared by oxidising impurities from cast ...

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  6. The mixture of compounds A and B is passed through a column of Al(2)O(...

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  7. Why is sulphide ore of copper heated in a furnace afer mixing with sil...

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  8. Why are sulphide ores converted to oxide before reduction?

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  9. Which method is used for refining Zr and Ti? Explain with equation.

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  10. What should be the considerations during the extraction of metals by e...

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  11. What is the role of flux in metallurgical processes?

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  12. How are metals used as semiconductor refined? What is the principle of...

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  13. Write down the reactions taking place in Bast furnace related to the m...

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  14. Give two requirements for vapour phase refining.

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  15. Write the chemical reaction involved in the extraction of gold by cyan...

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  16. Match the items of Column I with item of Column II and assign the corr...

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  17. Match the items of Column I with item of Column II and assign the corr...

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  18. Match the items of Column I with item of Column II and assign the corr...

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  19. Match the items of Column I with item of Column II and assign the corr...

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  20. Match the items of Column I with item of Column II and assign the corr...

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