Pyrazolines are well known biologically important nitrogen containing heterocycles. Nitrogen containing heterocyclic compounds  like pyrazolines have received considerable attention in recent years. Pyrazolines exhibit a plethora of bioactivities viz, COX-2 inhibitior, antiandrogenic, antibacterial, antifungal, antitumor, antidepressant, insecticidal, antidiabetic, photochemical,herbicidal molluscicidal, antinociceptive and antiamoebic activity. Pyrazolines are also used in the treatment of Parkinson’s, Alzehimer’s disease and Cerebral edema. Besides Being Biologicallly active they are also used as useful synthons in organic synthesis[16-18]. Hence synthesis of Pyrazolines are largely on account of their biological activity. Herein we report the synthesis of some novel pyrazolines by using the chalcones and hydrazine hydrate.