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MCQs

Total Questions : 194 | Page 18 of 20 pages
Question 171. Quantum number values for 3s are
  1.    n=3, l=0
  2.    n=2, l=1
  3.    n=1, l=0
  4.    n=2, l=2
 Discuss Question
Answer: Option A. -> n=3, l=0
Answer: (a).n=3, l=0
Question 172. Orbitals having same energy are called
  1.    Hybrid orbitals
  2.    Valence orbitals
  3.    Degenerate orbitals
  4.    d-orbitals
 Discuss Question
Answer: Option C. -> Degenerate orbitals
Answer: (c).Degenerate orbitals
Question 173. For all real processes where heat transfer occurs, the entropy
  1.    Decreases
  2.    Increases
  3.    Remains constant
  4.    Zero
 Discuss Question
Answer: Option B. -> Increases
Answer: (b).Increases
Question 174. A measure of disorder within a macroscopic system is called
  1.    Enthalpy
  2.    Rate constant
  3.    Specific heat constant
  4.    Entropy
 Discuss Question
Answer: Option D. -> Entropy
Answer: (d).Entropy
Question 175. The possible quantum numbers are
  1.    Two
  2.    Three
  3.    Four
  4.    Five
 Discuss Question
Answer: Option C. -> Four
Answer: (c).Four
Question 176. The shape of p-subshell is
  1.    Spherical
  2.    Dumb-bell
  3.    Complicated
  4.    Planar
 Discuss Question
Answer: Option B. -> Dumb-bell
Answer: (b).Dumb-bell
Question 177. There are 18 electrons in orbit
  1.    K
  2.    L
  3.    M
  4.    N
 Discuss Question
Answer: Option C. -> M
Answer: (c).M
Question 178. At nodal planes, the probability of finding the electrons is
  1.    Maximum
  2.    Minimum
  3.    Constant
  4.    Zero
 Discuss Question
Answer: Option D. -> Zero
Answer: (d).Zero
Question 179. Principle quantum number describes the following properties of an atom
  1.    Size of orbital
  2.    Distance of electrons from nucleus
  3.    Energy of orbital
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Answer: (d).All of above
Question 180. For d- subshell, the number of space orientations is
  1.    Two
  2.    Three
  3.    Four
  4.    Five
 Discuss Question
Answer: Option D. -> Five
Answer: (d).Five

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