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MCQs

Total Questions : 368 | Page 9 of 37 pages
Question 81. Total energy of the universe is always ______
  1.    Increasing
  2.    Decreasing
  3.    Constant
  4.    Cannot say
 Discuss Question
Answer: Option C. -> Constant
Answer: (c).Constant
Question 82. A stone has initial potential and kinetic energy as 10 J and 5 J respectively, if the final potential energy of the stone is 15 J what is its final kinetic energy?
  1.    0
  2.    5 J
  3.    10 J
  4.    15 J
 Discuss Question
Answer: Option A. -> 0
Answer: (a).0
Question 83. A stone has initial potential and kinetic energy as 5 J and 20 J respectively, if the final kinetic energy of the stone is 15 J what is its final potential energy?
  1.    0
  2.    10 J
  3.    15 J
  4.    25 J
 Discuss Question
Answer: Option B. -> 10 J
Answer: (b).10 J
Question 84. A stone has initial potential, kinetic and internal energy 7 J, 10 J and 2x J respectively, if the final kinetic energy, potential energy and internal energy are 5 J, 21 J and x respectively, what is the final internal energy?
  1.    2 J
  2.    4 J
  3.    5 J
  4.    9 J
 Discuss Question
Answer: Option D. -> 9 J
Answer: (d).9 J
Question 85. A stone has initial potential, kinetic and internal energy 4 J, 15 J and 20 J respectively, if the final kinetic energy and potential energy of the stone is 5 J and 10 J respectively, what is the final internal energy?
  1.    15 J
  2.    20 J
  3.    24 J
  4.    32 J
 Discuss Question
Answer: Option C. -> 24 J
Answer: (c).24 J
Question 86. In a reactor two stream are entering, one with CH₄ at 10 atm and 27°C, and another with O₂ at 10 atm and 0°C, producing CO₂, CO, H₂O, and O₂ at 10 atm and 23°C, what are the total degrees of freedom?
  1.    12
  2.    16
  3.    18
  4.    20
 Discuss Question
Answer: Option C. -> 18
Answer: (c).18
Question 87. In a reactor two stream are entering, one with S at 10 atm and 27°C, and another with O₂ at 10 atm and 0°C, producing SO₂, SO₃, and O₂ at 10 atm and 23°C, what are the total degrees of freedom?
  1.    10
  2.    13
  3.    15
  4.    17
 Discuss Question
Answer: Option D. -> 17
Answer: (d).17
Question 88. In a reactor two stream are entering, one with H₂ at 10 atm and 27°C, and another with O₂ at 10 atm and 0°C, producing H₂O at 10 atm and 23°C, what are the total degrees of freedom?
  1.    10
  2.    14
  3.    16
  4.    19
 Discuss Question
Answer: Option B. -> 14
Answer: (b).14
Question 89. In a reactor two stream are entering, one with N₂ at 10 atm and 27°C, and another with O₂ at 10 atm and 0°C, producing NO, NO₂, NO₃, and O₂ at 10 atm and 23°C, what are the total degrees of freedom?
  1.    12
  2.    17
  3.    19
  4.    21
 Discuss Question
Answer: Option C. -> 19
Answer: (c).19
Question 90. In a reactor two stream are entering, one with H₂ at 10 atm and 27°C, and another with O₂ at 10 atm and 0°C, producing H₂O₂, H₂O, and O₂ at 10 atm and 23°C, what are the total degrees of freedom?
  1.    12
  2.    17
  3.    19
  4.    23
 Discuss Question
Answer: Option B. -> 17
Answer: (b).17

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