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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