Intelligent means having the power of perceiving,learning,understanding and knowing; intelligence is also the"Mental ability",which is an essential quality for a good nurse.A nurse has to work with different categories of personnel in different situations.Such situations become a challenge for a nurse to work in as the situations are demanding.She has to make a quick and right decision regarding patient care;in such conditions,her nursing diagnosis and planning of patient care depends on the way she perceives and understands the patient's condition which later affects the recovery of patient.