E-PolyLearning

61. Value of energy for second orbit of hydrogen in kilo joule per mole is
a. −328.32
b. −1313.31
c. −145.92
d. −82.08
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Answer: (a).−328.32

62. In case of radiation amount of energy is proportional to
a. frequency of radiation
b. density of radiation
c. waves
d. light
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Answer: (a).frequency of radiation

63. Total energy of electrons consist of
a. three energies
b. two energies
c. four energies
d. five energies
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Answer: (b).two energies

64. Relative charge on neutron is
a. 1
b. 2
c. 3
d. 0
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Answer: (d).0

65. Movement of positive rays is from holes in
a. anode
b. neutrons
c. cathode
d. anti neutron
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Answer: (c).cathode