Refractometry and Polarimetry Exam ng baby ko

Refractometry is used to measure:

• The concentration of a solution

• The refractive index of a substance

• The specific rotation of a compound

• The boiling point of a liquid

The refractive index is:

• The ratio of the speed of light in air to the speed of light in the substance

• The angle of refraction

• The concentration of a solution

• The specific rotation of a compound

A common type of refractometer used in laboratories is:

• Digital refractometer

• Abbe refractometer

• Immersion refractometer

• All of the above

What factors can affect the refractive index of a substance?

• Temperature

• Wavelength of light

• Concentration of solutes

• All of the above

Polarimetry is used to measure:

• Refractive index

• Optical rotation

• Concentration of a solution

• Boiling point

Optically active compounds are those that:

• Rotate the plane of polarized light

• Do not rotate the plane of polarized light

• Have a high refractive index

• Have a low boiling point

The specific rotation of a compound is influenced by:

• The nature of the substance

• The concentration of the solution

• The length of the liquid column

• All of the above

A polarimeter is used to measure:

• Refractive index

• Optical rotation

• Concentration of a solution

• Boiling point

Which of the following is not a type of refractometer?

• Digital refractometer

• Abbe refractometer

• Polarimeter

• Immersion refractometer

The specific rotation of a compound is a characteristic property that can be used to:

• Identify the compound

• Determine its concentration

• Assess its purity

• All of the above