Natural Gas Burns with a Relatively Clean Flame

question 90

Multiple Choice

Natural gas burns with a relatively clean flame.Which of the following potential pollutants is produced in significant quantities during the combustion of natural gas in air?

• A)sulfur oxides
• B)nitrogen oxides
• C)metal oxides
• D)All of the above are produced in significant quantities.

---

Definitions:

Sinking Fund Deposits

Money regularly set aside by a company to repay a debt or replace an asset in the future.

Compounded Annually

An investment or loan interest calculation method where interest is added to the principal sum at the end of each year, with future interest then earned on the new total.

Present Value

Today's value of future cash flows or a lump sum, calculated using an established return rate.

Discounted

The process of determining the present value of a payment or a series of payments made in the future, using a specific discount rate.