Bioprocess Technology - Questions and Answers for Competitive Exams | GkSeries

37. Chromatography is used to ______.

• [A] separate two or more compounds based on their polarities.
• [B] separate two or more compounds based on their masses
• [C] separate two or more compounds based on how strongly they interact with other compounds.
• [D] all the above.

Answer: Option [D]

38. Activation energy for Bacillus stearothermophilus is _______ kcal/mol.

• [A] 70
• [B] 67.7.
• [C] 56.5.
• [D] 42.7.

Answer: Option [B]

39. The rate of ______ transfer is then multiplied by the volume of the aerator to yield the oxygen transfer rate, a key input in diffuser design

• [A] heat mass
• [B] oxygen deficit
• [C] oxygen mass
• [D] none of the above

Answer: Option [C]

40. Which one of the following is used as both carbon and nitrogen source?

• [A] Corn steep liquor
• [B] Peanut meal
• [C] Soya meal.
• [D] Urea

Answer: Option [A]

41. The precursor of griseofulvin is _____.

• [A] chloride
• [B] propionate
• [C] D-Thr.
• [D] L-Thr.

Answer: Option [A]

42. The inhibitor used in the production of tetracycline is _____.

• [A] sodium bisulfite.
• [B] bromide.
• [C] phosphate
• [D] penicillin.

Answer: Option [B]

43. Pick out the electrical transducer used in bioreactor.

• [A] Potentiometric.
• [B] Amperometric.
• [C] Conductimetric.
• [D] All the above.

Answer: Option [D]

44. The chromium content of AISI grade 316 steels is ______ percent.

• [A] 15
• [B] 18
• [C] 25
• [D] 28

Answer: Option [B]

45. Which among the following is a perforated type of sparger?

• [A] Porous sparger
• [B] Orifice sparger
• [C] Nozzle sparger
• [D] Combined sparger-agitator

Answer: Option [B]

46. Addition of nutrients, acid/alkali to fermenter is normally made through _________ tubes.

• [A] Steel
• [B] Wooden
• [C] Silicone
• [D] Rubber

Answer: Option [C]

47. The valve commonly used to regulate the flow of water/steam is ________.

• [A] plug
• [B] ball
• [C] pinch
• [D] globe

Answer: Option [D]

48. The valve commonly used to control crude flow is _____.

• [A] fire
• [B] stick
• [C] ball
• [D] gate

Answer: Option [D]