Hello

We often add flow charts to answers as it complements our answer and it is interactive and sometimes a flow chart is better able to represent a process, but merely drawing a flow chart is not a good option , so one should first write the answer and then draw the flow chart in addition, but yes if you have drawn a proper flow chart and has explained each step of the process in the flow chart then you may get full marks but chances are low. For example, if a question is of 5 marks , you can't just draw a flow chart but you need to write explanation as well , also one has to meet the word limit prescribed in the question paper.

Thank you