whereinR1,R2,R3,R4,R5= [H, Cl, F, CH3, OCH3, 3,4(OCH2O)]X1= [H, Br, Cl, F, CH3, OCH3, CH3, NO2, CF3]X2= [H, Br, Cl, F, CH3, CF3]The present invention relates to a compound of formula A. The process for the synthesis of pyrazole linked benzimidazole conjugates is also described. The compounds are useful as potential antitumor agents against human cancer cell lines.