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MCQs

Total Questions : 368 | Page 8 of 37 pages
Question 71. What is the heat of reaction if the heat of combustion of products is 10 J and heat of combustion of reactants is 5 J?
  1.    -5 J
  2.    5 J
  3.    10 J
  4.    Cannot be determined
 Discuss Question
Answer: Option A. -> -5 J
Answer: (a).-5 J
Question 72. What is the heat of reaction if the heat of combustion of products is 2 J and heat of combustion of reactants is 10 J?
  1.    8 J
  2.    -8 J
  3.    4 J
  4.    -4 J
 Discuss Question
Answer: Option A. -> 8 J
Answer: (a).8 J
Question 73. What is the heat of reaction if the heat of combustion of products is 40 J and heat of combustion of reactants is 25 J?
  1.    5 J
  2.    10 J
  3.    15 J
  4.    -15 J
 Discuss Question
Answer: Option D. -> -15 J
Answer: (d).-15 J
Question 74. What is the heat of reaction if the heat of combustion of products is 25 J and heat of combustion of reactants is 15 J?
  1.    -5 J
  2.    5 J
  3.    -10 J
  4.    10 J
 Discuss Question
Answer: Option C. -> -10 J
Answer: (c).-10 J
Question 75. What is the heat of reaction if the heat of combustion of products is 10 J and heat of combustion of reactants is 15 J?
  1.    -5 J
  2.    5 J
  3.    10 J
  4.    Cannot say
 Discuss Question
Answer: Option B. -> 5 J
Answer: (b).5 J
Question 76. What are the degrees of freedom?
  1.    Total variables in the process
  2.    Total species in the process
  3.    Total reactions in the process
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Total variables in the process
Answer: (a).Total variables in the process
Question 77. What are the total degrees of freedom if the number of species are 5, total streams are 2, stream temperature 2, stream pressure 2 and heat released 1?
  1.    1
  2.    5
  3.    6
  4.    12
 Discuss Question
Answer: Option D. -> 12
Answer: (d).12
Question 78. What are the total degrees of freedom if the number of species are 8, total streams are 4, stream temperature 2, stream pressure 2 and heat released 1, extent of reaction 3?
  1.    12
  2.    16
  3.    20
  4.    24
 Discuss Question
Answer: Option C. -> 20
Answer: (c).20
Question 79. What are the total degrees of freedom if the number of species are 8, total streams are 3, stream temperature 3, stream pressure 3 and heat released 1, extent of reaction 2?
  1.    8
  2.    12
  3.    15
  4.    17
 Discuss Question
Answer: Option D. -> 17
Answer: (d).17
Question 80. What are the total degrees of freedom if the number of species are 4, total streams are 2, stream temperature 2, stream pressure 1 and heat released 1, extent of reaction 1?
  1.    4
  2.    7
  3.    11
  4.    15
 Discuss Question
Answer: Option C. -> 11
Answer: (c).11

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