Two Technicians Are Explaining SCR (Selective Catalyst Reduction) Operation

question 59

Multiple Choice

Two technicians are explaining SCR (selective catalyst reduction) operation. Technician A says that after the urea decomposes into ammonia in the mixing chamber, the ammonia-exhaust gas composition passes over an SCR catalyst containing either copper or iron to break apart NOx molecules. Technician B says that blades or screens in the mixing device are used to create exhaust gas turbulence ahead of the mixing chamber. Who is right?

• A)A only"
• B)B only"
• C)Both A and B
• D)Neither A nor B"

---

Definitions:

Dividends

Payments made by a corporation to its shareholders, usually derived from the company's profits.

Separate Legal Person

An entity, such as a corporation, that has legal rights and obligations independent of its owners or members, allowing it to enter into contracts and own property.

Vicariously Liable

Legal principle where one party is held liable for the actions of a subordinate or associate due to their relationship to the wrongdoer.

Shareholders

Individuals or entities that own one or more shares of stock in a corporation, giving them a proportionate interest in the company's earnings and assets.