how to add quotes each word in columns

Hi again @sgnarkhede2016,

See your other post for this task for one column.
If you need to apply this transformation to all your columns, use a Loop attributes operator.
In attached file, the process.

Regards,

Lionel

Again if you need it for export, it is already included as an option in Write CSV.  I am not sure why you would need this inside RapidMiner as it already understands the difference between nominal types and other types.