Rotation is the circular movement of an objector planet around a center of rotation. The 3D objects like earth, moon and other planets always rotate around an imaginary line which is called the rotation axis. If the axis passes through the body’s center of mass, the body is said to rotate upon itself or spin.
Revolution is referred to as an orbital revolution. It happens when one body moves around another, while rotation is used to mean the movement around the axis like Moon revolving around the Earth and Earth revolving around the Sun.
It is going to be reaction of neutralization, and water and salt will be formed. If acid and base are strong, the reaction of the solution should become neutral.
