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Chemical equations and i..



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Q1. 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

Q2. What ids the value of ?3 for P?

(a) 0.09
(b) 0.08
(c) 0.07
(d) 0.06

Q3. What ids the value of ?2 for P?

(a) 0.98
(b) 0.88
(c) 0.78
(d) 0.68

Q4. What is the value of ?2 for A?

(a) 0.5
(b) 0.6
(c) 0.7
(d) 0.8

Q5. In a process, two feed streams are there and one output stream. The feed streams have the feed rates as 500 kg/sec and 600 kg/sec. If the output stream rate is 800 kg/s, what is the mass stored in the chamber in five seconds?

(a) 300 kg
(b) 500 kg
(c) 1000 kg
(d) 1500 kg

Q6. Based on number of degrees of freedom, find the incorrect statement, consider

(a) NU = NE for that a solution
(b) NU > NE > 0 for that more independent equation required
(c) NU< NE < 0 for that no solution exists unless some constraints are eliminated
(d) None of the mentioned

Q7. In the given tank, there are two feeds and one output. Consider a 2 hour operation; the feed rates are 4000 kg/hr and 6000 kg/hr. The accumulated material inside the tank is 2000 kg. What is the output rate kg/hr of the material?

(a) 9000
(b) 8000
(c) 7000
(d) 6000

Q8. We don`t use volume balance in a chemical process because

(a) Mass is not conserved in a process
(b) Volume is not conserved in a process
(c) Both a and b
(d) Neither a nor b

Q9. Material balance equation cannot be applied to

(a) Total moles
(b) Mass of an atomic species
(c) Moles of an atomic species
(d) All of the mentioned

Q10. Material balance equation can be applied to

(a) Total mass
(b) Mass of a component
(c) Moles of a component
(d) All of the mentioned


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