Carbon and Its Compounds Four and Seven Marks Questions

10th Standard

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Science

Time : 01:00:00 Hrs
Total Marks : 50
    9 x 4 = 36
  1. What is called homologous series? Give any three of its characteristics?

  2. Arrive at, systematically, the IUPAC name of the compound: CH3–CH2–CH2–OH.

  3. How is ethanol manufactured from sugarcane?

  4. Give the balanced chemical equation of the following reactions:
    (i) Neutralization of NaOH with ethanoic acid.
    (ii) Evolution of carbon dioxide by the action of ethanoic acid with NaHCO3.
    (iii) Oxidation of ethanol by acidified potassium dichromate.
    (iv) Combustion of ethanol.

  5. Explain the mechanism of cleansing action of soap.

  6. Write the characteristics of organic compounds.

  7. How will you classify hydrocarbonsf

  8. Explain how ethanol is manufactured from molasses?

  9. How to identify saturated and unsaturated compounds?

  10. 2 x 7 = 14
  11. The molecular formula of an alcohol is C4H10O. The locant number of its –OH group is 2.
    (i) Draw its structural formula.
    (ii) Give its IUPAC name.
    (iii) Is it saturated or unsaturated?

  12. An organic compound ‘A’ is widely used as a preservative and has the molecular formula C2H4O2. This compound reacts with ethanol to form a sweet smelling compound ‘B’.
    (i) Identify the compound ‘A’.
    (ii) Write the chemical equation for its reaction with ethanol to form compound ‘B’.
    (iii) Name the process.

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