Ipcc exam

Hi sir/madam,I am ipcc may 2015 student. I have given first group of ipcc 2015. My question is about my question answer writting style.Suppose in q-1 there is sub topic a,b,c,d and same in q-2 to q-7.I thought i should write question answer base on which question is more easy and can give me more marks.So i write q-1 a then on second page i wirte q-2 b then q-3 d then again i found that q-1 c is easy so i write that. So, i write my question answer in zig zag manner. Will it be fine or there will be effect of these on my result.Thanking you,Brijesh patel