For students taking CIE 5070 Chemistry, I would be uploading solutions to the MCQ papers from pervious years.

http://metatutorchemistry.blogspot.sg/p/this-page-contains-mcq-solutions-to.html

Besides providing the correct answers, the solutions would explain how these answers are obtained.

I believe these resources would be helpful not only to students taking CIE 5070, but to all students taking high school chemistry.