Questions and answers for exam Preparation

MCQs

Total Questions : 193 | Page 5 of 20 pages

Question 41. 100 Kg of a gas mixture of 40% He and 60% Ne is passed through a diffusion tube and the product has 20% He and 80% Ne, what is the amount of He recovered?

25 Kg
45 Kg
50 Kg
75 Kg

Discuss Question

Answer: Option A. -> 25 Kg
Answer: (a).25 Kg

Question 42. A gas mixture of 40% He and 60% Ne is passed through a diffusion tube, if the amount of He is recovered is 20% of the input, what is the percentage of He in the product?

25 %
33.3 %
50 %
66.6 %

Discuss Question

Answer: Option A. -> 25 %
Answer: (a).25 %

Question 43. 400 g of CaSO₄ is dissolved with 500 g of H₂O, if 226 g of CaSO₄.5H₂O crystallizes out, then what is the percentage of CaSO₄ in the remaining solution?

39.16%
51.54%
62.28%
75.67%

Discuss Question

Answer: Option A. -> 39.16%
Answer: (a).39.16%

Question 44. How much nitrogen must be added to a 20% nitrogen solution to obtain 100 Kg of 40% nitrogen solution?

10 Kg
25 Kg
50 Kg
75 Kg

Discuss Question

Answer: Option B. -> 25 Kg
Answer: (b).25 Kg

Question 45. A reactor is supplied with 6 moles of CO and 3 moles of O₂ and produced 4 moles of CO₂, what is the extent of reaction?

Discuss Question

Answer: Option B. -> 2
Answer: (b).2

Question 46. A reactor is supplied with two steams with equal flow rates, stream-1 containing 75% SO₂, 25% N₂ and stream-2 containing pure H₂S, if the product has 1200 grams of S, and the ratio of H₂S to H₂O is 5 and the ratio of SO₂ to H₂S is 2, what fraction of limiting reagent is converted into product?

0.21
0.46
0.73
0.83

Discuss Question

Answer: Option D. -> 0.83
Answer: (d).0.83

Question 47. A reactor is supplied with 5 moles each of CH₃OH and O₂, and the following reactions occur, CH₃OH + 1/2O₂ -> CH₂O + H₂O and then CH₂O + 1/2O₂ -> CO + H₂O, the conversion of methanol is 80% in first reaction, and conversion of CH₂O is 50% in second reaction. How many moles of CO are produced?

Discuss Question

Answer: Option B. -> 2
Answer: (b).2

Question 48. A reactor is supplied with two steams with equal flow rates, stream-1 containing 75% SO₂, 25% N₂ and stream-2 containing pure H₂S, if the product has 1200 grams of S, and the ratio of H₂S to H₂O is 5 and the ratio of SO₂ to H₂S is 2, how many moles of water are produced?

Discuss Question

Answer: Option A. -> 1
Answer: (a).1

Question 49. A reactor is supplied with two steams with equal flow rates, stream-1 containing 75% SO₂, 25% N₂ and stream-2 containing pure H₂S, if the product has 1200 grams of S, and the ratio of H₂S to H₂O is 5 and the ratio of SO₂ to H₂S is 2, what is percentage of Sulfur in the product?

Discuss Question

Answer: Option C. -> 61%
Answer: (c).61%

Question 50. A reactor is supplied with two steams with equal flow rates, stream-1 containing 75% SO₂, 25% N₂ and stream-2 containing pure H₂S, if the product has 1200 grams of S, and the ratio of H₂S to H₂O is 5 and the ratio of SO₂ to H₂S is 2, what fraction of excess reagent is converted into product?