Questions

RAM is used as a short-term memory because of its volatility.

Answer A is reversed. Answer C is sometimes mistakenly used to forecast project completion (it’s invalid because it does not take into consideration which completed tasks are on the critical path). Answer D is the definition of Schedule Variance. 

Appellate jurisdiction refers to the power of a higher court to review decisions and change outcomes of decisions of lower courts.

Among the given options, mud is not an aerosol.

An aerosol is a suspension of fine solid particles or liquid droplets, in the air or another gas. Aerosols can be natural or anthropogenic. Examples of natural aerosols are fog, dust, forest exudates and geyser steam. Examples of anthropogenic aerosols are haze, particulate air pollutants, and smoke.