it was not very tough if u have prepared seriously but too lengthy to be done in 3 hours,as the concepts were taking too long to get into the mind.. untill and uless u r perfectly done with all the chapters u could have never done the paper. i atempted only 58 marks paper. as no time was left. u have to read the question so many times to know what exaclty the question wants. it was filled with 100% complexity..