Which of the Following Statements Is True

question 27

Multiple Choice

Which of the following statements is true?

• A)Vitamins are classified as being soluble in either alcohol or fat.
• B)Scientists think all vitamins have been discovered.
• C)The first vitamin was discovered in 1960.
• D)Biotin is a vitamin-like substance for humans.

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Definitions:

M-Xylene

An aromatic hydrocarbon with two methyl groups attached to a benzene ring at the meta positions.

Relative Integrations

A concept in spectroscopy referring to the comparative measurement of signal areas to determine the ratio of different types of protons or other nuclei in a molecule.

Nuclear Spin States

The quantum mechanical states related to the intrinsic angular momentum (spin) of nuclei, which can influence the magnetic properties and behavior of atoms in a magnetic field.

90 MHz

Frequency commonly associated with the radio frequency range, specifically within the VHF band.