Carbon and Its Compounds Model Question Paper

10th Standard

    Reg.No. :
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Science

Time : 01:00:00 Hrs
Total Marks : 50
    6 x 1 = 6
  1. Ethene is an ___________

    (a)

    alkane

    (b)

    alkene

    (c)

    alkyze

    (d)

    armatic hydrocarbon

  2. The enzymes present in yeast is / are _____________

    (a)

    invertage

    (b)

    zymase

    (c)

    both (a) and (b)

    (d)

    neither (a) nor (b)

  3. Rectified spirit contains

    (a)

    95.5% of ethanol and 4.5% of water

    (b)

    100 % pure alcohol

    (c)

    4.5% of ethanol and 95.5% of water

    (d)

    50% of ethanal and 50% of water

  4. Ethanolis used as ______________

    (a)

    a preservative for biological specimen

    (b)

    an antifreeze

    (c)

    an antiseptic

    (d)

    all the above

  5. Ethanoic acid turns

    (a)

    red litmus blue

    (b)

    blue litmus red

    (c)

    red litmus green

    (d)

    blue litmus green

  6. Which of the unique feature (s) of Carbon enables it to form a large number of compounds?

    (a)

    catenation

    (b)

    covalency

    (c)

    tetra valency

    (d)

    both (a) and (c)

  7. 5 x 2 = 10
  8. What is rectified spirit??

  9. How is nitrogen content of molasses fortified?

  10. How will you convert ethanol to ethane?

  11. Write the uses of ethanol.

  12. Explain the reaction of carboxylic acids on metals

  13. 5 x 4 = 20
  14. Write the characteristics of organic compounds.

  15. How will you classify hydrocarbonsf

  16. Write the characteristics of hydrocarbons.

  17. Explain how ethanol is manufactured from molasses?

  18. How to identify saturated and unsaturated compounds?

  19. 2 x 7 = 14
  20. 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?

  21. 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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