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How do metals occur in nature? Give some...

How do metals occur in nature? Give some examples for any two types of minerals.

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VGS PUBLICATION-BRILLIANT-PRINCIPLES OF METALLURGY-EXERCISE
  1. What is the role of depressant in froth floatation?

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  2. Draw the diagram showing: Magnetic separation.

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  3. How do metals occur in nature? Give some examples for any two types of...

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  4. When do we use magnetic seperation method for concentration of an ore?...

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  5. What is the difference between roasting and calcination? Give one exam...

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  6. Draw the diagram showing: Froth floatation

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  7. Draw the diagram showing: Magnetic separation.

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  8. Draw a neat diagram of Reverberatory furnace and label it neatly.

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  9. Draw the diagram of the furnace, which is generally used for roasting.

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  10. Magnesium is an active metal. If it occurs as a chloride in nature, wh...

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  11. Mention two methods which produce very pure metals from impure metals.

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  12. Which method do you suggest for extracting of high reactivity metals?

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  13. Explain thermite process and mention it's applications in our daily li...

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  14. Where do we use handpicking and washing methods in our daily life? Giv...

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  15. The impurity present in the ore is called as:

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  16. Which of the following is carbonate ore?

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  17. Which of the following is the correct formula of gypsum?

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  18. The oil used in froth flotation process is

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  19. Froth flotation is the method used for purification of-----------ore.

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  20. Galen is an ore of?

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