part-b

PART-B Choose the correct answer and write its letter in the brackets.   1.  Units of universal gravitational constant is             a)  m/sec2                   b)  N. m2/kg2                c)  N.m2. kg2                d)  m.sec2         [        ] 2.  For a freely falling body   a)  u=0                       b)  v = 0           c)  t = 0                        d)  u = 0 and v = 0       [       ] 3.  Wave length of microwaves is         a)  10m to 10cm                       b)  0.7 mm to 100 mm c)  0.4 mm to 1 mm  d)  10 mm to 10 m                                                             [       ] 4.  In a stationary wave, the point at which the displacement is maximum is called. a)  Node                      b)  Antinode                 c)  Crest           d)  Trough                    [       ] 5.  a- particle is a ----change particle a)  Negative                  b)  Positive       c)  Neutral        d)  Positive and Negative          [       ] 6.  Which of the following shell has the least energy a)  L                 b)  M               c)  K                d)  N                                                    [       ] 7.  CaO is ---- in nature. a)  Neutral                    b)  Amphoteric c)  Basic           d)  Acids                      [       ] 8.  Solubility of a substance depends on ----- a)  Nature of solute                   b)  Nature of solvent     c)  Temperature            d)  All   [       ]   9.  The bond angle of diamond is --- a)  10o281                     b)  109o381                  c)  109o181                   d)  109o281 10.  Which of the following is a mixed fertilizer a)  KCl             b)  NH4Cl        c)  KnO           d)  Nitrophos K                                    [        ]   II Fill in the blanks with suitable words.   11.  When a body moves towards the earth due to gravity is taken as _________________. 12.  A group of wavelength of frequencies is called  _________________ 13.  Steradians is the unit of _________________ 14.  Aluminium is a _________________. 15.  RPM stands for _________________ 16.  Naphthalene is soluble is _________________ 17.  The extent of ionization of water increases with increasing _________________. 18.  _________________enzyme breaks the Glucose. 19.  Gray hard balls of cement is called _________________. 20.  The _________________ period is incomplete.   III  Match the following.   i)        Group – 'A'                                                                 Group – 'B'   21.   Atomic number                 (        )   A) Sum of the number of protons and neutrons     22.  Mass defect                        (        )     B)  4n + 2       23.   Mass number                    (        )     C)  4n + 3   24.  Neptunium series               (        )     D)  4n   25.  Uranium Series                  (        )     E)   Number of protons                                                                                                     F)   4n + 1                   G)  Stability of atom   ii)      Group – 'A'                                                             Group – 'B'   26.   Ethyl alcohol                   (        )     I)  C12H22 O11 27.   Sucrose                            (        )     J)  C12H35COOH 28.  Alkane                              (        )   K)  Cn H2n+2. 29.  Stearic acid                       (        )   L)  C8H18. 30.  Alkyne                              (        )   M)  CnH2n-2                                                               N)  C2H5OH                                                               O)   CnH2n

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previous prefinal x physical sciences

PHYSICAL SCIENCES (English Version) Parts A and B Time:  2 Hours                                                             Maximum Marks: 35   SECTION-I   Group-A                                                                                              5X2 = 10 Note:  1. Answer ANY FIVE questions choosing at least TWO from each of the following groups, i.e., Groups A & B.             2.  Each question carries 2 marks.   1.  Derive the relation between acceleration due to Gravity and Gravitational constant. 2.  Distinguish between step up and step down transformer. 3.  What are the uses of LASER in medicine. 4.  Explain a -decay and  b-decay.   Group 'B'   5.  What are the limitations of Arrhenius theory? 6.  Calculate the number of moles of NaOH present in 750 ml of 0.4 m of solution. 7.  Name two chromophores and auxochromes. 8.  Define ionization energy and explain the factors of ionization energy.   SECTION – II   Note: 1.  Answer any Four of the following Six questions.                  4X1 = 4 2.      Each question carries 1 mark.   9.  State Flemming's left hand rule. 10. What is damped vibration?. 11. Draw the symbol of p-n-p and n-p-n transistor. 12. Why are the alcohol distilleries located at the places of much water source? 13.  How are 'p' orbital designated. 14.  Define pH. SECTION – III   Note: 1.  Answer any Four questions, choosing Two from each of the following groups.            2.  Each question carries 4 marks.   Group 'A'                                                                                              4X4 = 16   15. Describe a method to determine the velocity of sound in air? 16. What are the differences between progressive waves theory and stationary waves? 17. Explain Nuclear Reactor with a labeled diagram.      18.  Two coils have an effective resistance 9 ohms when connected in series and 2 ohms when connected in parallel.  Find the values of individual Resistance of coils?   Group 'B'   19. State and explain with one example of Aufbau  principle? 20. Explain how does atomic Radius and ionization energy varies in a group and period? 21. How is soap industrially prepared?  22. What are Alkanes?  Write the substitution and combustion reaction of alkanes?   SECTION –IV                                                                                (Marks: 1 x 5=5)   Note:  1.  Answer Any One question from the following. 2.      Marks are 5.   23.  Draw and locate the neutral points when the north pole of a bar magnet faces geopgraphical north and when the south pole of bar magnet faces geopgraphical north.   24.  Draw a diagram showing the manufacture of Alcohol.

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