IQ and EQ of a person are determined by a standardised test. IQ measures the logical ability of the individual while EQ refers to emotional intelligence.
Intelligence quotient is an inborn ability while EQ is something that is developed through various life experiences.
EQ measures the ability to understand one's emotions and pay attention to body language and other gestures to perceive other's emotions. On the other hand, IQ measures logical thinking and reasoning abilities.
Having a high IQ determines success which is limited only to schools. Having a high level of EQ indicates success in life. Good leaders and managers usually have a high emotional quotient.