A few of your parents have requested for some reference material for exams.
well to keep things short, here they are!
work hard all!
O level Chemistry 2011 For your practice too!
Paper 1:
http://db.tt/kTKdzz5f (MCQ)
Paper 2:
http://db.tt/hhS75CTl (Short and Long questions)
Paper 3:
http://db.tt/1A19Obwr aka Practical Test!