MCQOPTIONS
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MCQOPTIONS
This section includes 74 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
wC3H6O3 + xO2 -> yCO2 + zH2O, what is the value of w + x + y + z? |
| A. | 3 |
| B. | 6 |
| C. | 10 |
| D. | 14 |
| Answer» E. | |
| 2. |
20 grams of CaCO3 is heated, how much calcium oxide will produce? |
| A. | 5.6 grams |
| B. | 11.2 grams |
| C. | 22.4 grams |
| D. | 44.8 grams |
| Answer» C. 22.4 grams | |
| 3. |
78 grams of benzene is burnt in air, how much water will it produce? |
| A. | 18 grams |
| B. | 36 grams |
| C. | 54 grams |
| D. | 72 grams |
| Answer» D. 72 grams | |
| 4. |
C5H12 + xO2 -> yCO2 + zH2O, what is the value of x + y*z? |
| A. | 24 |
| B. | 38 |
| C. | 46 |
| D. | 54 |
| Answer» C. 46 | |
| 5. |
C2H4 + xO2 -> 2CO2 + yH2O, what is the value of x + y? |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 8 |
| Answer» D. 8 | |
| 6. |
wC3H7O4 + xO2 -> yCO2 + zH2O, what is the value of w + x + y + z? |
| A. | 21 |
| B. | 35 |
| C. | 41 |
| D. | 47 |
| Answer» D. 47 | |
| 7. |
xKMnO4 + yFeS + zH2SO4 -> xMnSO4 + wFe2(SO4)3 + uK2SO4 + zH2O, what is the value of x + y + z + w + u? |
| A. | 60 |
| B. | 74 |
| C. | 85 |
| D. | 98 |
| Answer» C. 85 | |
| 8. |
A reactor is supplied with 2 streams both at same rates, one has pure Cl2, and another has pure C2H6, if the product has 20% C2H5Cl and 50% HCl and 30% C2H6, what is the ratio of rate of feed and rate of product? |
| A. | 0.2 |
| B. | 0.5 |
| C. | 2 |
| D. | 5 |
| Answer» C. 2 | |
| 9. |
A reactor supplied with CO2 and H2O, the product contains 40% CO2, 30% H2O and 30% H2CO3, what is the ratio of feed rate of CO2 and rate of products? |
| A. | 0.3 |
| B. | 0.4 |
| C. | 0.7 |
| D. | 0.9 |
| Answer» D. 0.9 | |
| 10. |
A reactor is supplied with 2 streams both at same rates, one has pure Cl2, and another has pure C2H6, if the product has 20% C2H5Cl and 80% HCl, what is the ratio of rate of feed and rate of product? |
| A. | 0.2 |
| B. | 0.5 |
| C. | 2 |
| D. | 5 |
| Answer» B. 0.5 | |
| 11. |
Ethane is supplied with chlorine in a reactor, how many independent element balances can you write? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 12. |
A reactor is supplied with 10 moles glucose and excess oxygen to produce CO2 and H2O, if the rate of products is 25 moles, what is the percentage of CO2 in the products? |
| A. | 0.1 |
| B. | 0.2 |
| C. | 0.3 |
| D. | 0.4 |
| Answer» E. | |
| 13. |
Ethane is supplied at the rate F with oxygen at the rate W and leaves the following products CO2, H2O, O2, C2H6 and H2 at the rate P. How many independent element balances are possible? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 14. |
A reactor is supplied with 10 moles glucose and excess oxygen to produce 40% CO2, 60% H2O, what is the rate of products? |
| A. | 25 mole |
| B. | 50 mole |
| C. | 75 mole |
| D. | 100 mole |
| Answer» B. 50 mole | |
| 15. |
A reactor is supplied with 2 streams both at the rate 5 mole, one has 40% Cl2 and 60% N2, and another has pure C2H6, if the product has C2H5Cl, HCl and N2 at the rate 20 mole, what is the percentage of HCl in products? |
| A. | 0.1 |
| B. | 0.15 |
| C. | 0.25 |
| D. | 0.3 |
| Answer» C. 0.25 | |
| 16. |
A reactor is supplied with glucose and oxygen to produce 40% CO2, 60% H2O, what is the ratio of glucose reacted and products? |
| A. | 0.2 |
| B. | 0.4 |
| C. | 0.6 |
| D. | 0.8 |
| Answer» C. 0.6 | |
| 17. |
Ethene is burnt with 50% of excess air, what is the percentage of CO2 in the products? |
| A. | 0.1111 |
| B. | 0.3636 |
| C. | 0.6666 |
| D. | 0.7272 |
| Answer» C. 0.6666 | |
| 18. |
The extent of a reaction is 10, and the stoichiometric coefficient of O2 is 2.5, if the moles of O2 entering the process is 45, what is the percentage of excess air? |
| A. | 0.2 |
| B. | 0.4 |
| C. | 0.6 |
| D. | 0.8 |
| Answer» E. | |
| 19. |
Pentane is burnt with 100% of excess air, what is the percentage of H2O in the products? |
| A. | 0.124 |
| B. | 0.346 |
| C. | 0.421 |
| D. | 0.569 |
| Answer» D. 0.569 | |
| 20. |
144 grams of C5H12 is burnt with 64 grams O2, and 44 grams of CO2 is formed, what is the percentage of excess O2? |
| A. | 0.25 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 1 |
| Answer» B. 0.5 | |
| 21. |
Propane is burnt with 20% excess O2, what is the percentage of CO2 in products? |
| A. | 0.125 |
| B. | 0.25 |
| C. | 0.45 |
| D. | 0.755 |
| Answer» B. 0.25 | |
| 22. |
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 CH2O came out of the reactor? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 23. |
Ethene is burnt with 150% of excess air, what is the percentage of O2 in the products? |
| A. | 0.125 |
| B. | 0.333 |
| C. | 0.454 |
| D. | 0.529 |
| Answer» E. | |
| 24. |
A reactor is supplied with C6H12O6 and the following reactions occur C6H12O6 -> 2C2H5OH + 2CO2 and C6H12O6 -> 2C2H3CO2H + 2H2O, 360 grams of pure glucose is supplied and 44 grams of CO2 was produced, what 90 grams of glucose left unreacted, how many grams of ethanol was produced? |
| A. | 23 |
| B. | 46 |
| C. | 92 |
| D. | 186 |
| Answer» C. 92 | |
| 25. |
A reactor is supplied with C6H12O6 and the following reactions occur C6H12O6 -> 2C2H5OH + 2CO2 and C6H12O6 -> 2C2H3CO2H + 2H2O, 360 grams of pure glucose is supplied and 44 grams of CO2 was produced, what 90 grams of glucose left unreacted, how many grams of propenoic acid was produced? |
| A. | 18 |
| B. | 36 |
| C. | 72 |
| D. | 144 |
| Answer» E. | |
| 26. |
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 CH3OH are there in the products? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 27. |
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 O2 are there in the products? |
| A. | 1.75 |
| B. | 2 |
| C. | 3.25 |
| D. | 5.5 |
| Answer» B. 2 | |
| 28. |
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? |
| A. | 0.23 |
| B. | 0.47 |
| C. | 0.61 |
| D. | 0.84 |
| Answer» D. 0.84 | |
| 29. |
A reactor is supplied with 5 moles of C4H10, and it undergoes following reactions C4H10 + 4H2O -> 4CO + 9H2 and C4H10 + 6.5O2 -> 4CO2 + 5H2O, if 8 moles of CO2 was produced and 2 moles of C4H10 remains unreacted, what are the number of moles of water produced? |
| A. | 2 |
| B. | 5 |
| C. | 7.5 |
| D. | 10 |
| Answer» E. | |
| 30. |
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 H2O are produced? |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 6 |
| Answer» E. | |
| 31. |
A reactor is supplied with C6H12O6 and the following reactions occur C6H12O6 -> 2C2H5OH + 2CO2 and C6H12O6 -> 2C2H3CO2H + 2H2O, 360 grams of pure glucose is supplied and 44 grams of CO2 was produced, what 90 grams of glucose left unreacted, how many grams of water was produced? |
| A. | 9 |
| B. | 18 |
| C. | 36 |
| D. | 54 |
| Answer» B. 18 | |
| 32. |
A reactor is supplied with 20 moles of C, and it undergoes following reactions C + 0.5O2 -> CO and C + O2 -> CO2, if 10 moles of CO2 was produced and 5 moles of C remains unreacted, what are the number of moles of CO produced? |
| A. | 1 |
| B. | 3 |
| C. | 5 |
| D. | 7 |
| Answer» D. 7 | |
| 33. |
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? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 34. |
A reactor supplied with CO2 and H2O, the product contains 10% H2CO3 and 90% H2O, what is the feed rate of CO2, if the rate of product is 50 mole? |
| A. | 5 mole |
| B. | 10 mole |
| C. | 25 mole |
| D. | 50 mole |
| Answer» B. 10 mole | |
| 35. |
A reactor supplied with CO2 and H2O, the product contains H2O and H2CO3, if the rate of CO2 is 10 mole, what is the percentage of H2CO3 in products? |
| A. | 10 |
| B. | 50 |
| C. | 75 |
| D. | 100 |
| Answer» E. | |
| 36. |
A reactor is supplied with 25 moles of C, and it undergoes following reactions C + 0.5O2 -> CO and C + O2 -> CO2, if 13 moles of CO2 was produced and 5 moles of C remains unreacted, what are the number of moles of CO produced? |
| A. | 1 |
| B. | 3 |
| C. | 5 |
| D. | 7 |
| Answer» E. | |
| 37. |
A reactor supplied with CO2 and H2O, the product contains H2O and H2CO3, if the rate of H2O is 10 mole, what is the rate of products? |
| A. | 5 mole |
| B. | 10 mole |
| C. | 15 mole |
| D. | 20 mole |
| Answer» C. 15 mole | |
| 38. |
A reactor is supplied with 45 moles of C, and it undergoes following reactions C + 0.5O2 -> CO and C + O2 -> CO2, if 25 moles of CO2 was produced and 6 moles of C remains unreacted, what are the number of moles of CO produced? |
| A. | 6 |
| B. | 9 |
| C. | 14 |
| D. | 17 |
| Answer» D. 17 | |
| 39. |
A reactor supplied with CO2 and H2O, the product contains CO2, H2O and H2CO3, if the rate of products is 10 mole and percentage of CO2 in products is 20%, what is the feed rate of H2O? |
| A. | 2 mole |
| B. | 4 mole |
| C. | 8 mole |
| D. | 10 mole |
| Answer» D. 10 mole | |
| 40. |
A reactor is supplied with 12 moles of C, and it undergoes following reactions C + 0.5O2 -> CO and C + O2 -> CO2, if 4 moles of CO2 was produced and 4 moles of C remains unreacted, what are the number of moles of CO produced? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 41. |
A reactor is supplied with 5 moles of C4H10, and it undergoes following reactions C4H10 + 4H2O -> 4CO + 9H2 and C4H10 + 6.5O2 -> 4CO2 + 5H2O, if 8 moles of CO2 was produced and 2 moles of C4H10 remains unreacted, what are the number of moles of CO produced? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 42. |
A reactor is supplied with 15 moles of C, and it undergoes following reactions C + 0.5O2 -> CO and C + O2 -> CO2, if 8 moles of CO2 was produced and 3 moles of C remains unreacted, what are the number of moles of CO produced? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 43. |
10 grams of NaCl and 1.8 grams of H2O are reacted, how much sodium hydroxide will produce? |
| A. | 4 grams |
| B. | 10 grams |
| C. | 40 grams |
| D. | 80 grams |
| Answer» B. 10 grams | |
| 44. |
A reactor is supplied with 10 moles of O2 and 10 moles of H2, if the extent of reaction is 5, how many moles of water is produced? |
| A. | 5 |
| B. | 10 |
| C. | 15 |
| D. | 20 |
| Answer» C. 15 | |
| 45. |
5 moles of Al2O3 are reacted with 10 moles H2SO4, how many moles of Al2(SO4)3 will produce? |
| A. | 3.33 |
| B. | 10 |
| C. | 30 |
| D. | 33.3 |
| Answer» B. 10 | |
| 46. |
A reactor is supplied with 10 moles of CH4 and 10 moles of O2, if the extent of reaction is 3, what are the moles of CO2 produced? |
| A. | 3 |
| B. | 6 |
| C. | 8 |
| D. | 12 |
| Answer» B. 6 | |
| 47. |
A reactor is supplied with 6 moles of N2 and 9 moles of H2, if 3 moles of NH3 is produced, how many moles of H2 are left at the end? |
| A. | 1.5 |
| B. | 3 |
| C. | 4.5 |
| D. | 6 |
| Answer» D. 6 | |
| 48. |
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? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 49. |
10 moles of C6H12 reacted with 18 moles of O2, how many moles of CO2 will produce? |
| A. | 3 |
| B. | 6 |
| C. | 9 |
| D. | 12 |
| Answer» E. | |
| 50. |
If 28 grams of N2 and 10 grams of H2 are reacted, how much NH3 will produce? |
| A. | 17 grams |
| B. | 34 grams |
| C. | 51 grams |
| D. | 54 grams |
| Answer» C. 51 grams | |