Which of the Following Improper Operation Is Least Likely to Extend

question 2

Multiple Choice

Which of the following improper operation is least likely to extend start-up time and increase start-up cost?

• A) Tower not vented
• B) No cooling liquid on condenser
• C) Opening a bleed valve on a positive pressure column
• D) Introduction of steam to reboiler during startup

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Definitions:

Bohr Effect

Named for Danish physiologist Christian Bohr (1855–1911). Shift of the oxygen-hemoglobin dissociation curve to the right or left because of changes in blood pH. The definition sometimes is extended to include shifts caused by changes in blood carbon dioxide levels.

Oxygen-Hemoglobin Dissociation Curve

A graph showing the relationship between the oxygen saturation of hemoglobin and the partial pressure of oxygen in the blood.

pH

A scale used to specify the acidity or basicity of an aqueous solution, ranging from 0 to 14, where 7 is neutral.

Bicarbonate Ion

A crucial buffer ion (HCO3-) in the blood, responsible for maintaining the body's acid-base balance, it is also involved in transporting carbon dioxide out of tissues.