E-PolyLearning

51. Continuous spectrum is characteristic of matter which is present in
a. independent units
b. bulk
c. space
d. gases
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Answer: (b).bulk

52. Mass of proton in amu is
a. 1.0067
b. 1.0073
c. 1.009
d. 1.008
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Answer: (b).1.0073

53. Square number of orbits is actually directly proportional to
a. Radius of Hydrogen
b. shape of hydrogen
c. color of hydrogen
d. size of hydrogen
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Answer: (a).Radius of Hydrogen

54. Chamber in Millikan oil drop method is filled with
a. air
b. gas atoms
c. oil
d. pressure
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Answer: (a).air

55. Ionization in gases can be produced with help of
a. anode rays
b. neutrons
c. cathode rays
d. ions
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Answer: (c).cathode rays