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Which is a stronger Lewis acid and why ?...

Which is a stronger Lewis acid and why ? `BF_3` OR ` BCl_3`

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OMEGA PUBLICATION-SAMPLE QUESTION PAPER -I (PUNJAB)-QUESTION
  1. Give the IUPAC names of :(CH3)3C-OH.

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  2. Define Ionic product of water. What is the effect of temprature on it?

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  3. Which is a stronger Lewis acid and why ? BF3 OR BCl3

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  4. Define COD and BOD.

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  5. Give reasons : Cone. HNO(3) can be transported in aluminium contai...

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  6. Dettol is a mixture of :

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  7. C Cl4 is not hydrolysed but SiCl4 can be hydrolysed with water. Why ?

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  8. Give differences between electron affinity and electronegativity.

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  9. Explain the action of acidic buffer.

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  10. What is the difference between e.m.f. and potential diffrence?

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  11. State Hess's law. Give two applications of it.

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  12. Explain the deviations of real gases from ideal gases.

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  13. Explain Dalton's law of partial pressures and Charles’ law.

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  14. What are electrophiles and nucleophiies? Give two examples in each cas...

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  15. Describe permutit process for softening hard water.

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

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

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

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

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

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