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MCQs

Total Questions : 194 | Page 7 of 20 pages
Question 61. Molar heat of sublimation of iodine is
  1.    60.2 KJ/mol
  2.    61.2 KJ/mol
  3.    62.2 KJ/mol
  4.    63.2 KJ/mol
 Discuss Question
Answer: Option C. -> 62.2 KJ/mol
Answer: (c).62.2 KJ/mol
Question 62. The efficiency of an electric generator is about
  1.    60 - 70 %
  2.    70 - 80 %
  3.    70 - 89 %
  4.    70 - 99 %
 Discuss Question
Answer: Option D. -> 70 - 99 %
Answer: (d).70 - 99 %
Question 63. When heat flows from one system to another, the net change in entropy is
  1.    Increased
  2.    Decreased
  3.    No change
  4.    None of above
 Discuss Question
Answer: Option A. -> Increased
Answer: (a).Increased
Question 64. When heat is absorbed by the system, change in entropy is
  1.    Positive
  2.    Negative
  3.    Neutral
  4.    Zero
 Discuss Question
Answer: Option A. -> Positive
Answer: (a).Positive
Question 65. The quantity of heat required to change the temperature by 1 Kelvin is called
  1.    Heat energy
  2.    Heat capacity
  3.    Kinetic energy
  4.    Potential energy
 Discuss Question
Answer: Option B. -> Heat capacity
Answer: (b).Heat capacity
Question 66. The quantum number that gives orientation of orbitals in space is
  1.    Principal quantum number
  2.    Spin quantum number
  3.    Magnetic quantum number
  4.    Azimuthal quantum number
 Discuss Question
Answer: Option C. -> Magnetic quantum number
Answer: (c).Magnetic quantum number
Question 67. The subshell which has "10" electrons in it is
  1.    s
  2.    p
  3.    d
  4.    f
 Discuss Question
Answer: Option C. -> d
Answer: (c).d
Question 68. Which one of the following is not an energy level?
  1.    K
  2.    S
  3.    L
  4.    M
 Discuss Question
Answer: Option B. -> S
Answer: (b).S
Question 69. The distance of electrons from the nucleus can be explained by
  1.    Spin quantum number
  2.    Magnetic quantum number
  3.    Principal quantum number
  4.    Azimuthal quantum number
 Discuss Question
Answer: Option C. -> Principal quantum number
Answer: (c).Principal quantum number
Question 70. Two electrons present in an orbital can be differentiated by
  1.    Principal quantum number
  2.    Magnetic quantum number
  3.    Spin quantum number
  4.    Azimuthal quantum number
 Discuss Question
Answer: Option C. -> Spin quantum number
Answer: (c).Spin quantum number

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