Basic Chemical Engineering Mock Test 3

1. A liquid solid mixture with 20% solid and 80% liquid is input to a dryer, if the amount of evaporated water is 60% of the amount of input, what is the percentage of solid in the product?

2. In a steady-state reactive system, NaOH and HCl are supplied to the system both at the rate of 100 mole/min, then what is the rate of NaCl produced?

3. A batch process is that in which material enters the system and _____ which of the following should fill the gap?

4. 4 moles of CO and 2 moles of O₂ are reacted, then what type of reactant O₂ is?

5. wC₃H₆O₃ + xO₂ –> yCO₂ + zH₂O, what is the value of w + x + y + z?

6. In a steady-state reactive system, NaCl and H₂CO₃ are supplied to the system at the rate of 200 L/min and 100 L/min respectively, what is the rate at which Na₂CO₃ is produced?

7. A gas mixture input is given to a membrane with 20% O₂ and 80% N₂, the waste contains 60% of the input and the product contains 30% O₂ and 70% N₂, what are the number of moles of O₂ in the waste?

8. wC₃H₇O₄ + xO₂ -> yCO₂ + zH₂O, what is the value of w + x + y + z?

9. Solution-1 containing 30% acetic acid and 100% nitrogen at the rate 10 Kg/min combines with Solution-2 containing 20% acetic acid and 10% nitrogen at the rate 20 Kg/min and Solution-3 containing 10% acetic acid and 30% nitrogen at the rate 30 Kg/min the product formed contains 20% acetic acid, what is the percentage of nitrogen in product?

10. Solution-1 containing 30% acetic acid and 20% nitrogen at the rate F combines with Solution-2 containing 20% acetic acid and 10% nitrogen at the rate D and Solution-3 containing 10% acetic acid and 30% nitrogen at the rate N the product formed contains 20% acetic acid at the rate 10 Kg/min, what is the percentage of nitrogen in product?