http://jaarsmtd.blogspot.com/2007/07/modul-kecemerlangan-akademik-terengganu.html
http://berryberryeasy.com/2010/11/spm-2010-chemistry-common-mistakes-paper2-section-b/
http://www.ziddu.com/download/11622146/Chemistry_3.pdf.html
( answer scheme )
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