In Which Decade Was the First Commercially Important Synthetic Polyamide

question 67

Multiple Choice

In which decade was the first commercially important synthetic polyamide synthesized?

• A) 1920s
• B) 1930s
• C) 1940s
• D) 1950s

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Definitions:

Causal Hypothesis

A statement predicting a cause-and-effect relationship between two or more variables.

Dependent Variable

In experimental research, it is the variable being tested and measured, expected to change as a result of manipulations of the independent variable.

Internal Validity

The extent to which a study or experiment accurately establishes a cause-and-effect relationship between a treatment and its observed outcome.

Moderate Length

Refers to something not too long nor too short, typically considered to be of a reasonable or acceptable size or duration.