Explore topic-wise MCQs in Bioprocess Engineering Questions and Answers.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

A solution of common salt in water is prepared by adding 20 kg of salt to 100 kg of water, to make a liquid of density 1323 kg/m3. Calculate the concentration of salt in this solution as a (a) weight fraction, (b) weight/volume fraction, (c) mole fraction, (d) molal concentration.

A. 15.7%, 23.1%, 0.058, 3.88 moles in m3
B. 14.5%, 22.4%, 0.059, 2.88 moles in m3
C. 16.7%, 22.1%, 0.058, 3.77 moles in m3
D. 14.7%, 23.1%, 0.059, 2.77 moles in m3
Answer» D. 14.7%, 23.1%, 0.059, 2.77 moles in m3
Discussion
2.

2SO2+O2 → 2SO3. What is the stoichiometric ratio of SO2 to SO3?

A. 3
B. 1
C. 2
D. 0
Answer» C. 2
Discussion
3.

A continuous process is set up for treatment of wastewater. Each day, 103 kg cellulose and 105 kg bacteria enter in the feed stream, while 102 kg cellulose and 1.5 x 102 kg bacteria leave in the effluent. The rate of cellulose digestion by the bacteria is 8 x 102 kg d-1. The rate of bacterial growth is 4x 102 kg d-l; the rate of cell death by lysis is 6 x 102 kg d-1. Write balances for cellulose and bacteria in the system.

A. 1× 103 kg, 9 × 103 kg
B. 1× 102 kg, 9.965 × 104 kg
C. 1× 103 kg, 9.964 × 104 kg
D. 1× 102 kg, 9 × 103 kg
Answer» C. 1× 103 kg, 9.964 × 104 kg
Discussion