hi pritesh,
if ur question is about jee paper, den its marking system is quite simple n u will find it on d 1st page of ur question paper .normally, der r problems of multiple options wid +3 n 1 negative mark n in assertion reasoning it is +4 , -1.
for match d columns dey gave step marking from d last year ..for other details u can go thru dis year
paper n u can find it on our website.