Question

Odd man out ( Hydrometer,Refractometer, Barometer,Salinometer)​

Answer 1

Answer:

Refractometer

Explanation:

A refractometer is a laboratory or field device for the measurement of an index of refraction (refractometry). Refractometers measure the degree to which the light changes direction, called the angle of refraction. A refractometer takes the refraction angles and correlates them to refractive index (nD) values that have been established. Using these values, you can determine the concentrations of solutions.

Answer 2

Answer:

Physical balance is used to measure mass. The other two are used to measure density.