How Have Complex Molecules Such as Formaldehyde (H₂CO) Been Detected

question 163

Multiple Choice

How have complex molecules such as formaldehyde (H₂CO) been detected in interstellar clouds?

• A) by direct sampling by space probes
• B) by observing the chemical reactions in which they are created
• C) only by theoretical modeling since it is known that the component elements (H, C, O) are present in space
• D) by molecular emission lines

---

Definitions:

Illegality

The quality or state of being contrary to law; actions or conditions that are against the law.

Statute Of Frauds

A legal principle requiring certain types of contracts to be written and signed in order to be enforceable.

Bound By Contracts

A phrase indicating that parties are legally obligated to adhere to the terms outlined in a contract they have entered into.

Presumed

Accepted as true or valid based on the evidence until proven otherwise.