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MCQs

Total Questions : 193 | Page 1 of 20 pages
Question 1. Which of the following does the concept of material balance based upon?
  1.    Conservation of mass
  2.    Conservation of energy
  3.    Conservation of momentum
  4.    Conservation of Volume
 Discuss Question
Answer: Option A. -> Conservation of mass
Answer: (a).Conservation of mass
Question 2. A combustion reaction has reactants 1 mole of CxHy and 2 moles of O₂ and products 1 mole of CO₂ and 2 mole of H₂O, what is x + y?
  1.    1
  2.    3
  3.    4
  4.    5
 Discuss Question
Answer: Option D. -> 5
Answer: (d).5
Question 3. A container has 10 grams of water 5 grams of water is added and 2 grams of water is taken out, what is the final amount of water?
  1.    7 grams
  2.    10 grams
  3.    13 grams
  4.    15 grams
 Discuss Question
Answer: Option C. -> 13 grams
Answer: (c).13 grams
Question 4. The equation of material balance, (Final condition + Sum of outputs) is equal to which of the following?
  1.    Initial condition – Sum of inputs
  2.    Initial condition + Sum of inputs
  3.    Sum of inputs – Initial condition
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Initial condition + Sum of inputs
Answer: (b).Initial condition + Sum of inputs
Question 5. 10 moles of O₂ is added to 10 moles of H₂, how many moles of H₂O will it produce?
  1.    5
  2.    10
  3.    15
  4.    20
 Discuss Question
Answer: Option B. -> 10
Answer: (b).10
Question 6. A reactor with efficiency 50%, has the feed CO₂ and SO₂ with mass fraction 0.4 and 0.6 with the rate 10 Kg/hr, what is the rate of CO₂ in product side?
  1.    0.5 Kg/hr
  2.    1 Kg/hr
  3.    1.5 Kg/hr
  4.    2 Kg/hr
 Discuss Question
Answer: Option D. -> 2 Kg/hr
Answer: (d).2 Kg/hr
Question 7. Waste water flowing with TSS concentration 40 mg/L at the rate of 10 Liter/min is discharged into the river, if the river is flowing at the rate of 15 Liter/min, what is the concentration of TSS in the river?
  1.    10 mg/L
  2.    30 mg/L
  3.    45 mg/L
  4.    60 mg/L
 Discuss Question
Answer: Option D. -> 60 mg/L
Answer: (d).60 mg/L
Question 8. Water flowing with TSS at the rate of 40 Liter/min, is discharged into a river flowing at the rate of 20 Liter/min, if the concentration of TSS in the river is 5 mg/L, what is the concentration of TSS in water?
  1.    5 mg/L
  2.    10 mg/L
  3.    15 mg/L
  4.    20 mg/L
 Discuss Question
Answer: Option B. -> 10 mg/L
Answer: (b).10 mg/L
Question 9. A reactor has feed rate of 10 Kg/ hr and 5 Kg/hr and product rate of 9 Kg/hr, what is the efficiency of the reactor?
  1.    10%
  2.    30%
  3.    60%
  4.    100%
 Discuss Question
Answer: Option C. -> 60%
Answer: (c).60%
Question 10. Water flowing with chlorine concentration 10 mg/L at the rate of 20 Liter/min, is discharged into a river, if the concentration of chlorine in river is 5 mg/L what is the flow rate of river?
  1.    10 Liter/min
  2.    20 Liter/min
  3.    30 Liter/min
  4.    40 Liter/min
 Discuss Question
Answer: Option A. -> 10 Liter/min
Answer: (a).10 Liter/min

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