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What do you understand by COD?...

What do you understand by COD?

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BOD- The amount of dissolved oxygen required to decompose organic matter by microorganisms.
COD- The amount of oxygen required to oxidize organic matter by chemicals.
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ICSE-SELF ASSESSMENT PAPER 1-Questions
  1. Define Gibb.s free energy and free energy change.

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  2. What are green chemicals?

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  3. What do you understand by COD?

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  4. Name three green house gases.

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  5. What are Grignard reagents and how are they prepared ? What happens wh...

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  6. Compare atomic orbitals with molecular orbitals.

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  7. Balance the following equation in basic medium. Cr(OH)(3)+IO(3)^(-)t...

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  8. Calculate the oxidation number of the underlined atom in the following...

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  9. Calculate the oxidation number of the underlined atom in the following...

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  10. Calculate the oxidation number of the underlined atom in the following...

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  11. Calculate the oxidation number of the underlined atom in the following...

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  12. The compound AgF(2) is unstable compound. However, if formed, the comp...

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  13. Balance the following equations. C(2)H(5)OH+l(2)+OH^(-)toCHl(3)+HCOO...

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  14. Name the substance oxidised and the substance reduced, and also identi...

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  15. Identify the substance undergoing oxidation, the substance undergoing ...

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  16. Write formulas for the following compounds : Iron (III) sulphate

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  17. Write formulas for the following compounds : Chromium (III) oxide

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  18. Why is benzene extra ordinarily stable though it contains three double...

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  19. Explain why Alkanes do not possess much chemical reactivity under ordi...

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  20. State how the following conversions can be carried out: Ethyl alcoh...

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