If no external torque acts on a body, will its angular velocity remain conserved ?

If no external torque acts on a body, will its angular velocity be constant?

Assertion : The speed of a whirl wind in a tornado is alarmigly high. Reason : If no external torque acts on a body, its angualr velocity remains constant.

When no external torque acts on a system, its angular momentum remains constant. Is the statement true ? Should kinetic energ of rotation of the system remain constant ? If yes, why , and if no, why not?

The product of torque acting on a body and angular velocity is

If a constant torque acts on a body, the body?

If a constant torque acts on a body, the body?

When no extemal torque acts on the body, the net angular momentum of a rotating body

Statement 1: The angular momentum of a body moving in a circle with constant velocity remains conserved about any point on the circumference of the circle. Statement 2: If the torque acting on the body is zero than its angular momentum is conserved. Which one of thefollowing options is correct?