The Mode of Transport That Serves a Very Limited Number

question 97

Multiple Choice

The mode of transport that serves a very limited number of locations but has a high dependability in meeting schedules is ________.

• A) trucks
• B) railroads
• C) waterways
• D) airfreight
• E) pipelines

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Definitions:

δ 4.2

A chemical shift value in nuclear magnetic resonance (NMR) spectroscopy indicating the resonance position of certain hydrogen atoms in a molecule relative to a standard reference.

Carbonyl Stretching

A vibrational movement in infrared spectroscopy, indicating the presence of a carbonyl group (C=O) in organic compounds.

Aldehydes

Organic compounds containing a carbonyl group bonded to at least one hydrogen atom, with the general formula R-CHO.

Ketones

Organic compounds characterized by a carbonyl group (C=O) bonded to two carbon atoms, important in many biological and industrial processes.