If the level of water in the eudiometer is below that in the cylinder, is the pressure in the eudiometer higher or lower than the atmospheric pressure?

lower than the atmospheric pressure

Explanation:

An eudiometer have a graduated glass tube , where the mixture of the gases react with the electric spark , which helps to measure the change in the volume of the gases , during the process of the chemical reaction .

From the question ,

when the water level in the eudiometer is below that in the cylinder , then , the pressure in the eudiometer will be lower than the pressure of the atmosphere .

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.