Wednesday, November 5, 2008

TEST PAPER 14 : ALL CHAPTERS : 100 MARKS

There are 54 questions in all and time limit is 3 hours.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark
each, Total marks 15]


  1. The cut-off limit of human eye to see is ______.

    1. 1 nm
    2. 100 nm
    3. 1000 nm
    4. 10000 nm

  2. Magnification for convex mirror is ______.

    1. always positive
    2. always negative
    3. 0
    4. 1

  3. Who had patented more than 1000 inventions during his life time ?

    1. Edison
    2. Volta
    3. Ampere
    4. Faraday

  4. ______ was the first person to notice the magnetic effect of electric current.

    1. Faraday
    2. Ampere
    3. Oersted
    4. Maxwell

  5. Bombardment of neutron on 6Li3 gives ______.

    1. 1H0
    2. 1H1
    3. 2H1
    4. 3H1

  6. The sun stays in one nakshatra for about ______.

    1. 30 days
    2. 13.5 days
    3. 7 days
    4. 1 day

  7. Conversion of milk into curd is ______.

    1. a physical change
    2. a chemical change
    3. not a chemical change
    4. neither a physical nor a chemical change

  8. Helmets are made from ______.

    1. manganese steel
    2. chrome steel
    3. cobalt steel
    4. silicon steel

  9. An organic acid + an alcohol --> ______.

    1. an aldehyde
    2. a ketone
    3. an ester
    4. an amide

  10. Which of the following is the monomer of natural rubber ?

    1. Isoprene
    2. Chloroprene
    3. Neoprene
    4. TEFLON

  11. Liquefaction method is used for the purification of metals with ______.

    1. high melting point
    2. high boiling point
    3. low melting point
    4. low boiling point

  12. Urine mainly consists of ______.

    1. uranium
    2. urea
    3. CO2
    4. sugar

  13. Plant hormones are called ______.

    1. hypohormones
    2. metahormones
    3. phytohormones
    4. cytohormones

  14. Mutation theory was given by ______.

    1. Lamarck
    2. Darwin
    3. Hugo De Vries
    4. Mendel

  15. World Environment Day is celebrated every year on ______.

    1. 5th March
    2. 15th April
    3. 15th May
    4. 5th June


    SECTION - B : ANSWER IN SHORT : [1 mark each, Total
    marks 15]

  16. What is a simple microscope ?
  17. Define : 1-ohm resistance.
  18. What type of magnetic field arises when current passes through a linear wire ?
  19. Where are hot water geysers found in Gujarat ?
  20. What did Ptolemy believe about the Universe ?
  21. Which is the gas mainly present in the atmosphere of Pluto ?
  22. Define : pH.
  23. Write the formula of acetone cyanohydrin.
  24. What is the full form of PABA ?
  25. Where does the biosynthetic phase of photosynthesis take place ?
  26. Mention the types of nephridia in earth worm.
  27. Define : Reproduction.
  28. Where are genes located ?
  29. What does environment mean ?
  30. What is meant by biodegradable pollutants ?


    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total
    marks 24]

  31. Write a brief note on bucky ball.
  32. Distinguish between compound microscope and astronomical telescope[2 points]
  33. A lamp of resistance 20Ω is joined to a battery of 12 V. Find the value of the resistance to be connected in series with the lamp in order to get current of 0.5 A.  OR  Explain the importance of earthing wire.
  34. Explain : The energy obtained from nuclear fusion is better than that obtained from fission reactions.
  35. Calculate the pH of 0.03 M aqueous solution of NaOH.(Take log10 3 = 0.4771). OR  Mention the criteria of chemical equilibrium.
  36. Write a note on saponification.
  37. Mention four uses of hydrogen.
  38. Describe exchange of gases in tissues.
  39. Write four points about erythrocytes.
  40. Explain the importance of ultrapure metals.
  41. Mention the characteristics of hormones.
  42. Explain : Homologous organs  OR  Draw a chart showing types of environment.


    SECTION - D : ANSWER THE FOLLOWING : [3 marks each,
    Total marks 21]

  43. Describe Ohm's experiment.  OR  Derive an expression for equivalent resistance(R) when three resistors of R1, R2 and R3 Ω are connected in parallel.
  44. Explain : Solenoid.
  45. Describe preparation of Plaster of Paris, write its two properties and two uses.  OR  Describe preparation of acetic acid by fermentation as well as by chemical method.
  46. Describe refining of metals by electrochemical method.
  47. Mention organs of human respiratory system and describe mechanism of breathing.
  48. Draw a neat diagram of brain and write about hind brain.
  49. Explain : Grafting with diagram.


    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total
    marks 25]

  50. Explain : Total internal reflection and mirage with diagram.
  51. Describe nuclear reactor with diagram.  OR  Write a note on construction and working of a space shuttle with simple diagram.
  52. With the help of an experiment explain the concept of dynamic nature of chemical equilibrium.
  53. Write a detailed note on ammonia, its manufacture and mention its properties and uses.
  54. Describe the structure of chromosome with diagram.  OR  Describe Watson-Crick model for the structure of DNA.


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