State whether the following statement is true or false :
The symbol of element cobalt is `CO`.

State whether the following statement is True or False : The d-block elements are called transition elements

State whether the following statements are true or false :A ray has no end point.

State whether the following statement is true or false : Rubber is a magnetic material.

State whether the following statements are true or false : The heating element of an electric iron is made of tungsten.

State whether the statements are true or false a-:a=b-:a

State whether the statements are true or false axxb=bxxa

State whether the following statements are true or false : A line has a define length.

State whether the statements are true or false a-b=b-a