I am studying in home.will i crack IIT jee without coaching

dear kamal 
ya , sure but , you need to plan up the preparation for that . 
1- frst of all take good publishers book , 
2- for test series go with GRADEUP/ toppr  , (donot choose askiitians ) 
3- then prepare a schedule and go alongwith that 
4- everyday u have to check your progress by a mock test 
HOPE IT HELPS 
CHEERS