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Describe the role of the following in th...

Describe the role of the following in the processes mentioned: NaCN in the extraction of silver forms silver ore.

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ASSAM ACADEMIC CENTRE-EXAM PAPER 2013-Example
  1. Mention the type of semiconductor, (n-type or p-type) when silicon dop...

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  2. Gold metal crystallizes in a face-centred cubic cell (fcc). Determine ...

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  3. Describe the role of the following in the processes mentioned: NaCN in...

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  4. Describe the role of the following in the processes mentioned: Limesto...

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  5. Describe the role of the following in the processes mentioned: Iodine ...

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  6. Write down the reaction taking place in different zones in the blast f...

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  7. Give reasons: [Ti(H2O)6]^(3+) is coloured while [Sc(H2O)6]^(3+) is col...

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  8. Give reasons: [COF6]^(3-) is a high spin complex ion.

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  9. Draw the two geometrical isomers of the complex compound [Pt(NH3)2Cl2]

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  10. Define the following terms with one example each: Coordination sphere

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  11. Define the following terms with one example each: Coordination number

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  12. Define the following terms with one example each: Ligands

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  13. What happens, when- Ethanal is treated with methyl magnesium bromide a...

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  14. What happens, when- Phenol is heated with zinc dust?

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  15. What happens, when- Methoxyethane is treated with excess HI.

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  16. An organic compound contains 69.77% carbon, 11.63% hydrogen and the re...

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  17. An organic compound contains A(C7H5N) on hydrolysis with strong aqueou...

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  18. Identify A and B : CH3CH2Br overset(KCN) rarr A overset(LiAlH4) rarr B

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  19. Identify C and D : C6H5NO2 overset(Fe+HCl) rarr C overset(NaNO2) under...

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  20. Name the vitamin whose deficiency causes rickets.

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