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Write the principle involved in zone ref...

Write the principle involved in zone refining .

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Impurities are more soluble in molten state than in the solid state of the metal and pure metal are present in the solid state.
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SUNSTAR PUBLICATION-II PUC CHEMISTRY (SUPPLEMENTARY EXAM QUESTION PAPER JULY - 2016)-PART - D
  1. Write the principle involved in zone refining .

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  2. a) Calculate the packing efficiency of particles in a body centred cub...

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  3. Calculate the number of paricles per unit cell of FCC .

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  4. 300cm^(3) of an aqueous solution of a protein contains 2.12 g of the p...

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  5. i) State Henry's law. ii) Soda water bottles are sealed under high p...

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  6. Find the value of AG^(@) at 25^(@)C for the following electrochemical ...

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  7. Write the equations of anodic and cathodic reactions occur during rust...

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  8. Derive an integrated rate equation for the rate constant of a zero ord...

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  9. Write the energy distribution curve showing temperature dependence of ...

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  10. Mention any one application of adsorption.

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  11. i) What is 'Tyndall effect'? ii) In the coagulation of negative sol,...

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  12. What is heterogeneous catalysis? Give an example.

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  13. i) Explain S(N)2 mechanism taking an example of chloromethane. ii) W...

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  14. i) CH(3)-Br+AgFrarr CH(4)F+AgBr Name the above reaction. ii) P - d...

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  15. i) Identifiy 'A' and 'B' in the following equations. CH(3)-CH=CH(2) ...

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  16. Explain Williamson's ether synthesis.

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  17. i) How does benzaldehyde reacts with acetophenone in presence of a dil...

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  18. Among formic acid and acetic acid, which is more acidic ? Give reason...

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  19. i) Explain the reduction of nitrocompounds to amines with an examples....

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  20. How is aniline converted in phenyl isocyanide ? Write the equation.

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  21. Write Haworth structure for maltose.

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