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Alkali metals give blue solutions in amm...

Alkali metals give blue solutions in ammonia. Why?

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OMEGA PUBLICATION-SAMPLE QUESTION PAPER -I (PUNJAB)-QUESTION
  1. Describe permutit process for softening hard water.

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  2. Give the theory of manufacture of washing soda by Solvay’s process.

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  3. Alkali metals give blue solutions in ammonia. Why?

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  4. Calculate the volume of 4.4 g of CO2 at S.T.P.

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  5. Define empirical formula and molecular formula ? How are they related ...

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  6. Balance the following equations by oxidation no. method. MnO4^(-) + Fe...

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  7. Balance the following equations by oxidation no. method. S + HNO3 rarr...

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  8. Define oxidising agent and reducing agent on the basis of oxidation nu...

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  9. Distinguish between intermolecular and intramolecular H-bonds.

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  10. Distinguish between sigma and pi orbitals.

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  11. What are hybridisation states of each carbon atom in the following com...

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  12. Explain the shape of C2H4 molecule on the basis of hybridisation.

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  13. Describe orbital picture of benzene.

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  14. How will you convert benzene into (a) Chlorobenzene (b) Nitrobenze...

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  15. Give the laboratory preparation of ethene.

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  16. Define peroxide effect .

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  17. Ethyne is acidic in nature. Why ?

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  18. Calculate n, l, m and s for 4f and 3d electrons.

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  19. Explain Heisenberg's uncertainty principle. Give its significance.

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  20. How Bohar's model differ from Rutherford’s Model of atom.

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