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MCQs

Total Questions : 95 | Page 3 of 10 pages
Question 21. Which of the following is the unit of flow rate?
  1.    Kg/s
  2.    Liters/s
  3.    Moles/s
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 22. What is the mass flow rate of a liquid flowing through a pipe of which 100 grams of water was collected in 10 seconds?
  1.    0.01 kg/s
  2.    0.05 kg/s
  3.    0.1 kg/s
  4.    0.5 kg/s
 Discuss Question
Answer: Option A. -> 0.01 kg/s
Answer: (a).0.01 kg/s
Question 23. What is the volumetric flow rate if 100 kg of water is collected in 10 seconds? (Density of water = 1000 kg/m³)
  1.    0.1 m³/s
  2.    0.2 m³/s
  3.    0.01 m³/s
  4.    0.02 m³/s
 Discuss Question
Answer: Option C. -> 0.01 m³/s
Answer: (c).0.01 m³/s
Question 24. A liquid is flowing through a pipe of cross section 4 m² at a rate of 4 kg/s, at a point pipe is divided into two pipes of areas of equal areas, what will be the ratio of flow rate in both the pipes?
  1.    1:3
  2.    1:1
  3.    1:2
  4.    2:3
 Discuss Question
Answer: Option B. -> 1:1
Answer: (b).1:1
Question 25. Which of the following is not conserved for the flow of an incompressible liquid in a pipe with variable area?
  1.    Mass
  2.    Volume
  3.    Velocity
  4.    Flow Rate
 Discuss Question
Answer: Option C. -> Velocity
Answer: (c).Velocity
Question 26. How many atoms of carbon represent 1.5 mole?
  1.    6.022 X 10²³
  2.    1.2044 X 10²³
  3.    3.011 X 10²³
  4.    9.033 X 10²³
 Discuss Question
Answer: Option D. -> 9.033 X 10²³
Answer: (d).9.033 X 10²³
Question 27. How many grams of NaCl represent 1 mole?
  1.    23
  2.    35.5
  3.    58.5
  4.    69.5
 Discuss Question
Answer: Option C. -> 58.5
Answer: (c).58.5
Question 28. Calculate the number of moles in 42 grams of NaHCO₃?
  1.    0.5
  2.    1
  3.    1.5
  4.    2
 Discuss Question
Answer: Option A. -> 0.5
Answer: (a).0.5
Question 29. Which of the following has the same number of moles as in 398 grams of CuSO₄?
  1.    2 grams of hydrogen
  2.    40 grams of oxygen
  3.    35 grams of nitrogen
  4.    58.5 grams of Sodium chloride
 Discuss Question
Answer: Option B. -> 40 grams of oxygen
Answer: (b).40 grams of oxygen
Question 30. Calculate the number of moles in 369 grams of Ca°Cl₂?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3

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