Question

A hydrometer submerges to mark $X$ in water. In turpentine, it will submerge to a mark.
A. Below $X$
B. Above $X$
C. $X$
D. Zero

Answer 1

We learned about hydrometer which includes Archimedes principle, from that principle we are going to solve this answer. The hydrometers can hold any number of density-related properties along the stem.

Complete step by step answer:
Hydrometer: A hydrometer is a measurement method of the relative liquid density based on the principle of buoyancy. Usually they are calibrated and graduated on one or more levels of gravity, for example. A hydrometer typically consists of an alternating glass tube with a wider bottom for buoyancy, ballast for stability such as plum or mercury, and a small stem with measuring steps. The test fluid will be poured into a large tube, typically a graduated cylinder, so that the hydrometer is lowered softly into the liquid until it is free to float. The degree to which the liquid surface touches the hydrometer's stem is associated with relative density.

So, the correct answer is “Option B”.

Note:
A hydrometer is used to determine liquid’s specific gravity (or relative density); i.e. the density-to-density ratio of the liquid. A glass hydrometer is typically built from a cylindrical stem and a mercury-weighted bulb, or from a plumb to make it float upright.