If you have a copy of Adobe Acrobat Professional you can create your own question bank from past year papers. The bank you will create is 'bare-bones'. It does not link to curriculum focus, level of difficulty, answer keys or examiner reports. With all those negatives, why bother? Mainly because the question bank itself runs on the free Adobe Acrobat.
1) Create a folder and
copy all the PDFs you want to index to the folder.
2) Open Adobe Acrobat
Professional.
3) Choose Advanced > Catalog....
4) Click New Index...
In Index Title, give your index file a name.
In Index
Description, type a few words about the type of index.
Then browse for folders
(Any folder nested under an included folder will also be
indexed.)
Click OK. you will be prompted to build.
Click Build, and specify the location for the index file.
Click Save. When complete you will see index build successful.
Acrobat Professional has created a file with a .pdx extension and a support folder, with file(s) with .idx extensions. The IDX files contain the index entries. These files are available to any user who wants to search the index.
Note:
The procedure may vary slightly in a different version of Adobe Acrobat Professional.