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MCQs

Total Questions : 622 | Page 11 of 63 pages
Question 101. Value of radius 4.75 angstrom is for
  1.    2nd orbit of hydrogen
  2.    3rd orbit of hydrogen
  3.    5th orbit of hydrogen
  4.    6th orbit of hydrogen
 Discuss Question
Answer: Option B. -> 3rd orbit of hydrogen
Answer: (b).3rd orbit of hydrogen
Question 102. +1 is relative charge which is present on
  1.    proton
  2.    electrons
  3.    neutrons
  4.    neutrino
 Discuss Question
Answer: Option A. -> proton
Answer: (a).proton
Question 103. Principle quantum number is represented by
  1.    n
  2.    m
  3.    l
  4.    p
 Discuss Question
Answer: Option A. -> n
Answer: (a).n
Question 104. Size of s-orbital increases when value of principal quantum number
  1.    decreases
  2.    increases
  3.    remains constant
  4.    fluctuates
 Discuss Question
Answer: Option B. -> increases
Answer: (b).increases
Question 105. Cathode rays can produce shadow when object placed in their path is
  1.    transparent
  2.    translucent
  3.    solid
  4.    opaque
 Discuss Question
Answer: Option D. -> opaque
Answer: (d).opaque
Question 106. Spectrum of hydrogen is obtained at
  1.    low pressure
  2.    high pressure
  3.    very low pressure
  4.    high temperature
 Discuss Question
Answer: Option C. -> very low pressure
Answer: (c).very low pressure
Question 107. N+l value of 6d orbital is
  1.    8
  2.    7
  3.    6
  4.    9
 Discuss Question
Answer: Option A. -> 8
Answer: (a).8
Question 108. When spectra is observed in high resolving spectrometer, each line formed is consist of pair of lines, this structure is called
  1.    single line
  2.    doublet line
  3.    triple line
  4.    pressed line
 Discuss Question
Answer: Option B. -> doublet line
Answer: (b).doublet line
Question 109. When cathode rays fall on matter they produce
  1.    energy theory
  2.    movement
  3.    heat
  4.    shine
 Discuss Question
Answer: Option C. -> heat
Answer: (c).heat
Question 110. Discovery of protons was commenced in year
  1.    1889
  2.    1880
  3.    1878
  4.    1896
 Discuss Question
Answer: Option D. -> 1896
Answer: (d).1896

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