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MCQs

Total Questions : 622 | Page 8 of 63 pages
Question 71. Color of fluorescence produced by cathode rays in glass tube is
  1.    purplish
  2.    greenish
  3.    maroon
  4.    yellow
 Discuss Question
Answer: Option B. -> greenish
Answer: (b).greenish
Question 72. Rutherford proposed about neutron that its mass should be equal to
  1.    electron
  2.    proton
  3.    neutron
  4.    anti neutrino
 Discuss Question
Answer: Option B. -> proton
Answer: (b).proton
Question 73. Cathode rays are deflected usually towards the
  1.    positive plate
  2.    negative plate
  3.    upward plate
  4.    downward plate
 Discuss Question
Answer: Option A. -> positive plate
Answer: (a).positive plate
Question 74. Path of rays of cathode in which they travel is
  1.    curved
  2.    circular
  3.    straight
  4.    oblique
 Discuss Question
Answer: Option C. -> straight
Answer: (c).straight
Question 75. Electrons are able to revolve around nucleus vicinity in
  1.    open orbits
  2.    randomly
  3.    close orbits
  4.    clusters
 Discuss Question
Answer: Option C. -> close orbits
Answer: (c).close orbits
Question 76. Charge on oil droplet is actually charge on
  1.    one electron
  2.    two protons
  3.    neutrons
  4.    two neutrons
 Discuss Question
Answer: Option A. -> one electron
Answer: (a).one electron
Question 77. Proton is a smallest particle which is obtained from
  1.    nitrogen
  2.    oxygen
  3.    hydrogen
  4.    gold plate
 Discuss Question
Answer: Option C. -> hydrogen
Answer: (c).hydrogen
Question 78. To describe metal characteristics in X Rays equation given was
  1.    Rutherford equation
  2.    Moseley equation
  3.    Bohr equation
  4.    none of these
 Discuss Question
Answer: Option B. -> Moseley equation
Answer: (b).Moseley equation
Question 79. Photographic plate in Rutherford experiment was coated with
  1.    Zn sulphide
  2.    cadmium chloride
  3.    silver chloride
  4.    titanium
 Discuss Question
Answer: Option A. -> Zn sulphide
Answer: (a).Zn sulphide
Question 80. X Rays are produced in
  1.    metal tube
  2.    discharge tube
  3.    aluminium tube
  4.    mercury tube
 Discuss Question
Answer: Option B. -> discharge tube
Answer: (b).discharge tube

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