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MCQs

Total Questions : 622 | Page 57 of 63 pages
Question 561. In absence of magnetic field, all three p-orbitals are called
  1.    degenerate orbitals
  2.    s-orbitals
  3.    generate orbital
  4.    both a and b
 Discuss Question
Answer: Option A. -> degenerate orbitals
Answer: (a).degenerate orbitals
Question 562. Quantum numbers are used to describe
  1.    proton
  2.    nucleus
  3.    electron
  4.    positron
 Discuss Question
Answer: Option C. -> electron
Answer: (c).electron
Question 563. Window through which X Rays move in experiment is made up of
  1.    platinum
  2.    iron
  3.    steel
  4.    aluminum
 Discuss Question
Answer: Option D. -> aluminum
Answer: (d).aluminum
Question 564. 1 Cycle per second is equal to
  1.    decibels
  2.    Hz
  3.    per second
  4.    none
 Discuss Question
Answer: Option B. -> Hz
Answer: (b).Hz
Question 565. In formula 2n2 principle quantum number cannot have value of
  1.    one
  2.    three
  3.    two
  4.    zero
 Discuss Question
Answer: Option D. -> zero
Answer: (d).zero
Question 566. Element volatilized for continuous spectrum effect the
  1.    number of lines of spectrum
  2.    continuity of spectrum
  3.    thickness
  4.    color
 Discuss Question
Answer: Option A. -> number of lines of spectrum
Answer: (a).number of lines of spectrum
Question 567. If proton (p+) number of an element changes,
  1.    it will become an isotope
  2.    it will become another element
  3.    it will become an electrolyte
  4.    it will sublimate immediately
 Discuss Question
Answer: Option B. -> it will become another element
Answer: (b).it will become another element
Question 568. In periodic table, period number indicates number of
  1.    neutrons
  2.    protons
  3.    electrons
  4.    photons
 Discuss Question
Answer: Option D. -> photons
Answer: (d).photons
Question 569. Number of electrons (e-) in phosphorus (P) is 15. valence electrons shall be
  1.    2
  2.    8
  3.    5
  4.    4
 Discuss Question
Answer: Option C. -> 5
Answer: (c).5
Question 570. Purpose of a mass spectrometer is to
  1.    determine the charge of a particle
  2.    determine the particles
  3.    determine the mass of an atom
  4.    provide data for data loggers
 Discuss Question
Answer: Option C. -> determine the mass of an atom
Answer: (c).determine the mass of an atom

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