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Zirconium is best refined by ......... m...

Zirconium is best refined by ......... method.

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Assertion : Zirconium can be purified by Van Arkel method. Reason : Zrl_4 is volatile and decomposes at 1800 K.

Fill in the blank : zinc carbonate can be refined by..... .

Name two metals which can be refined by Van Arkel method.

Complete the missing links Bryophyllum is the best example of propagation by ..............

What is refining ?

Which one of the following ore is best concentrated by froth floatation method?

In the electrolytic refining of zinc, ............

Zone refining is used for the

Fill in the blanks Recovery of product,its refining and processing is called ......... processing.

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. Purest form of iron is

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  2. State whether the statement is true or false- Lunar caustic is the com...

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  3. Zirconium is best refined by ......... method.

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  4. In blast furnace, iron oxide is reduced by

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  5. Nichrome metal alloy is a mixture of-

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  6. The naturally occurring chemical substances in the form of which metal...

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  7. Copper can be extracted from

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  8. Fill in the blanks- alloy is made up of 14% of manganese and 85% of ir...

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  9. Sulphide ores are concentrated by froth floatation process.

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  10. Copper can be extracted from

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  11. Choose the correct alternative : Pine oil is added in froth floatation...

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  12. Bell metal alloy is the mixture of-

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  13. Give appropriate answer of the given statement- Which alloy is made up...

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  14. Which is better reducing agent at temperature 983 K, C or Co?

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  15. Give appropriate answer for the following question- Solder is a mixtur...

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  16. Substances which convert infusible impurities Present in ores into fus...

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  17. In the electrorefining of copper,some gold is deposited as:

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  18. Collect the melting point of Ice

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  19. Calcination is the process of converting an ore into its oxide by heat...

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  20. Haematite is Fe2O3 / Fe3O4.

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