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Define COD and BOD....

Define COD and BOD.

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OMEGA PUBLICATION-SAMPLE QUESTION PAPER -I (PUNJAB)-QUESTION
  1. Define Ionic product of water. What is the effect of temprature on it?

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

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  3. Define COD and BOD.

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

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  5. Dettol is a mixture of :

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

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  7. Give differences between electron affinity and electronegativity.

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  8. Explain the action of acidic buffer.

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

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

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

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

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

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  14. Describe permutit process for softening hard water.

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

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

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

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

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

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

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