Bioprocess Technology - Questions and Answers for Competitive Exams | GkSeries

49. The valve used to prevent accidental reversal of flow of liquid/gas in a pipe is _______ valve.

• [A] pressure control.
• [B] check
• [C] safety
• [D] gate

Answer: Option [B]

50. Oxygen solubility________ as the temperature rises.

• [A] Inceases
• [B] Not affected.
• [C] Decreases
• [D] None

Answer: Option [C]

51. The control system in which a sensor will detect change in output of the controller is proportional to the input signal produced by environmental change is ____ controller.

• [A] two-position.
• [B] proportional
• [C] integral
• [D] derivative

Answer: Option [B]

52. The controller which serves the rate of change of the error signal and contributes a component of the output signal that is proportional to a derivative of the error signal is _____.

• [A] proportional
• [B] ON/OFF.
• [C] integral
• [D] derivative

Answer: Option [D]

53. A ________ converts a digital signal from the computer into an electrical voltage.

• [A] DAC
• [B] DDC
• [C] ADC
• [D] SSC

Answer: Option [A]

54. In which of the following liquid the apparent viscosity decreases with increasing shear rate?

• [A] Bingham plastic.
• [B] Pseudoplastic
• [C] Newtonian liquid.
• [D] Dilatant liquid.

Answer: Option [B]

55. Which of the following treatments removes phosphates and nitrates from sewage?

• [A] Primary
• [B] Secondary
• [C] Tertiary
• [D] Digester

Answer: Option [C]

56. Which among the following filter belong to continuous filter?

• [A] Rotary vacuum.
• [B] Vertical metal leaf.
• [C] Plate and frame.
• [D] Stacked-disc.

Answer: Option [A]

57. The stationary phase material in the column chromatography is also called _____.

• [A] adsorbent
• [B] adsorb
• [C] elute
• [D] absorbent

Answer: Option [A]

58. Paper chromatography is an example of ________ chromatography.

• [A] solid-solid
• [B] liquid-liquid.
• [C] gas-liquid.
• [D] solid-liquid

Answer: Option [B]

59. In chromatography, sample components undergo _______ distribution between two phases.

• [A] equilibrium
• [B] molecular
• [C] adsorption
• [D] absorption

Answer: Option [A]

60. _____ is secreted by Pseudomonas elodea.

• [A] Pectin
• [B] Gellan gum.
• [C] Chitin
• [D] Carrageenans

Answer: Option [B]