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Which of the following ores is concentra...

Which of the following ores is concentrated by chemical leaching method.

A

Galena

B

Copper pyrite

C

Cinnabar

D

Argentite

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UNITED BOOK HOUSE-SET-13-Exercise
  1. In the cell Zn//Zn^(2+)//Cu^(2+)//Cu the negative terminal is.

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  2. For the single step reaction of type A + 2B rarr E + 2F the rate law i...

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  3. Which of the following ores is concentrated by chemical leaching metho...

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  4. Chlorobenzene can be obtained from benzene diazonium chloride by.

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  5. The analgesic used to present heart attack.

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  6. XeF4 molecule has the shape.

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  7. Acid anhydrides on reaction with primary amine gives.

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  8. The reductive ozonolysis of benzene gives.

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  9. Define Peptization and Emulsion.

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  10. SF6 exists but SH6 has no existence. Why?

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  11. Arrange the following oxides in the order of their increasing acidity....

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  12. 6gm of urea and 9gm of glucose are dissolved in 1 Litre aqueous soluti...

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  13. For the cell Cu//Cu^(2+)//Hg^(2+)//Hg, E(cell)^(6) = 0.45 V. Find the ...

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  14. Alcohol acts as both acids and bases. Why?

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  15. Give two examples of Co-polymers.

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  16. Differentiate between Schottky and Frenkel defect.

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  17. What is point defect? A metal has cubic close packed crystal structure...

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  18. What do you mean by colligative properties? Boiling point of water at ...

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  19. State Faradays laws of electrolysis. What is meant by 1 Faraday?

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  20. How many faradays of electricity will be required to electrilyse compl...

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