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Iron scraps are advisable and advantageo...

Iron scraps are advisable and advantageous than zinc scraps for reducing the low grade copper ores. Why?

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zinc is costlier metal than iron.
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SUNSTAR PUBLICATION-II PUC CHEMISTRY ( ANNUAL EXAM QUESTION PAPER MARCH - 2020)-PART-D
  1. Iron scraps are advisable and advantageous than zinc scraps for reduci...

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  2. Calculate the packing efficiency in Face Centred Cubic (FCC) structure...

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  3. Calcium metal crystallises in a face centered cubic lattice with edge ...

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  4. Vapour pressure of benzene is 200 mm of Hg. When 2 gram of a non-volat...

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  5. What are azeotropes? Give an example for binary solutions showing mini...

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  6. Calculate the e.m.f. of the cell in which the following reaction takes...

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  7. State Kohlrausch law of independent migration of ions.

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  8. Define limiting molar conductivity?

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  9. Derive an intergrated rate for the first order reaction.

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  10. According to collision theory, what are the two factors that lead to e...

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  11. Write a note on Dialysis.

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  12. What is the effect on AH and AS during the process of adsorption?

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  13. Give an example for heterogeneous catalysis.

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  14. Write equations for the steps in S(N)1 mechanism of conversion of tert...

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  15. Complete the following reactions: CH3- CH = CH2 + HI to

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  16. Complete the following reactions:

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  17. Complete the following reactions: CH3CH2 Br underset("Aq. Ethanol")...

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  18. Write the mechanism of acid catalysed dehydration of ethanol to ethene...

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  19. How does anisole react with methyl chloride?

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  20. How is benzoyl chloride converted into benzaldehyde. Write the equatio...

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  21. Write a general equation for the formation of carboxylic acid from Gri...

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