Whenever you are working wood with a chisel, it is essential that you keep the blade as sharp as possible. This will not only make your job easier, but will almost always result in a better finish to whatever you are paring.
There are several reasons why you may want to build a partition wall from solid blocks, rather than the potentially easier and quicker stud partition wall. Solid walls will give far greater acoustic and thermal insulation than a stud wall (even if the stud wall has insulation fitted) and will certainly feel more solid.
Non-loadbearing Partition walls are usually constructed from wooden studs and plasterboard, and in many cases you will not need to look for another solution. If, however, you are planning to build a partition wall on a solid concrete floor, it is worth considering using concrete blocks for the construction.