| 1. | Which of the following does the concept of material balance based upon? |
| a. | Conservation of mass |
| b. | Conservation of energy |
| c. | Conservation of momentum |
| d. | Conservation of Volume |
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Answer: (a).Conservation of mass
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| 2. | The equation of material balance, (Final condition + Sum of outputs) is equal to which of the following? |
| a. | Initial condition – Sum of inputs |
| b. | Initial condition + Sum of inputs |
| c. | Sum of inputs – Initial condition |
| d. | None of the mentioned |
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Answer: (b).Initial condition + Sum of inputs
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| 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? |
| a. | 7 grams |
| b. | 10 grams |
| c. | 13 grams |
| d. | 15 grams |
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Answer: (c).13 grams
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| 4. | 10 moles of O₂ is added to 10 moles of H₂, how many moles of H₂O will it produce? |
| a. | 5 |
| b. | 10 |
| c. | 15 |
| d. | 20 |
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Answer: (b).10
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| 5. | 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? |
| a. | 1 |
| b. | 3 |
| c. | 4 |
| d. | 5 |
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Answer: (d).5
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