What Type of Carbon Environment Does Not Generate a Signal

question 12

Multiple Choice

What type of carbon environment does not generate a signal in the DEPT-90 spectrum and gives a positive peak in the DEPT-135 spectrum?

• A) quaternary
• B) methine
• C) methylene
• D) methyl
• E) carbonyl

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Definitions:

Tetrahedron

A four-sided pyramid, as in a silica tetrahedron.

Soluble

Capable of being dissolved in a solvent, typically referring to substances in liquids.

Mohs Hardness Scale

Consists of ten common minerals ranked in order of increasing relative hardness, from 1 to 10.

Bowen's Reaction Series

A sequence that describes the order of mineral crystallization from cooling magma according to their chemical composition and temperature.