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BF3 acts as a Lewis acid. Why ?...

`BF_3` acts as a Lewis acid. Why ?

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OMEGA PUBLICATION-SAMPLE QUESTION PAPER -III (PUNJAB)-QUESTION
  1. Calculate enthalpy of the reaction : 4NH3(g) +3O2(g) rarr 2N2(g)+ 6H2O...

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  2. Explain Le Chatelier’s principle.

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  3. BF3 acts as a Lewis acid. Why ?

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  4. Can you prepare a solution having pH more than 14 ?

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  5. Write IUPAC name of the following compunds

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  6. Write IUPAC name of the following compunds

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  7. Why tirtary carbocations are more stable than, secondary and primary c...

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  8. Give the chemistry of Solvay process for the manufacture of Na(2)CO(3)...

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  9. Group 2 elements are denser and harder than group 1 elements. Why ?

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  10. What is isotopic effect?

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  11. How does ozone react with : FesO(4)

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  12. Explain why H2O is a liquid but H2S is a gas at room temperature.

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  13. Give the chemistry of Borax bead test.

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  14. Calculate the formal charge on each O-atom in O3.

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  15. Define bond order. What is its importance? Calculate bond.order in 0(2...

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  16. Explain the quantum number n, l and m. Also give the physical signific...

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  17. Calculate de Broglie's wavelength associated with an electron moving w...

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  18. Derive de Broglie’s equation.

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  19. Distinguish between matter waves and electromagnetic waves.

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  20. How will you convert C(2)H(2) into (a) Acetaldehyde (b) 1,1-Dichloroe...

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