Question 20Steam Plants - Assistant Engineer
70% to passWhich of the following chemicals is used in an Orsat apparatus to absorb carbon dioxide?
APotassium hydroxide
BCuprous chloride
CPyrogallic acid
DPotassium chromate
AI Explanation
The correct answer is A) Potassium hydroxide. Potassium hydroxide (KOH) is used in an Orsat apparatus to absorb carbon dioxide (CO2) from the gas sample being analyzed. The Orsat apparatus is a device commonly used to determine the composition of flue gases, including the concentration of CO2. Potassium hydroxide has a high affinity for CO2 and will selectively remove it from the gas mixture, allowing the remaining components to be measured. The other options are incorrect because: B) Cuprous chloride is used to absorb oxygen, not CO2; C) Pyrogallic acid is used to absorb oxygen, not CO2; and D) Potassium chromate is not typically used in an Orsat apparatus for gas analysis.
Related Questions
Q734:Which of the following systems can normally be supplied by auxiliary exhaust ste... Q264:Coast Guard Regulations Q210:Which of the listed problems will happen when the water level of a fire-tube typ... Q650:What is the FIRST thing that will happen if both the main and standby lube oil p... Q520:Oil supply pressure to the main lube oil header of a gravity feed lube oil syste...
Ready to test your knowledge?
Take a Steam Plants - Assistant Engineer Practice ExamOfficial Resources