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A noble gas has the property to diffuse ...

A noble gas has the property to diffuse through rubber. Name the noble gas. 

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Helium has property to diffuse through rubber.
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SUNSTAR PUBLICATION-II PUC CHEMISTRY (P.U. BOARD LATEST MODEL QUESTION PAPER - 2)-PART - D
  1. A noble gas has the property to diffuse through rubber. Name the noble...

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  2. Caleulate the packing efficiency in a unit cell of Cubic Close Packing...

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  3. Explain with an example how impurity defect develops in NaCl crystal.

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  4. Calculate the mole fraction of Co, in one litre of soda water sealed u...

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  5. What are these? i) solid solutions ii) colligative properties iii) i...

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  6. a) i) Name the product liberated at anode when dil. H(2)SO(4) is elect...

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  7. ii) What Faraday of current is required to electrolyse one mole of wat...

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  8. b) i) Between mercury cell and nickel-cadmium cell, which is a seconda...

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  9. Mention one advantage of H(2) - O(2) fuel cell.

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  10. c) Write Nernst equation for the cell represented as: Mg(s)|Mg((aq))^(...

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  11. Show that for a first order reaction, t(99.9%)=10t(1//2).

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  12. b) In the graph drawn what does A and the shaded region B represent?

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  13. Name the phenomenon/process involved i) mixing of hydrated ferric ox...

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  14. Mention any two characteristic of enzyme catalysis.

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  15. a) Write the equation for SN^(2) mechanism between CH(3)Cl and -OH. Wh...

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  16. b i) Aryl halide with sodium in dry ether undergoes Fitting reaction. ...

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  17. a) What is the organic compound formed in the following :

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  18. b) Give reason: - i) o-nitrophenol and p-nitrophenol can be separate...

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  19. a) Write the structure of P and Q? Name the reaction that gives the pr...

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  20. Explain decarboxylation reaction with an example.

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  21. a) Name the products X and Y?

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