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- Did you really memorize the information and data and other stuffs that were in the book or did you just read it once and thought — “fine now I see how it happens !” and then forget it
- Did you try to memorize the reactions given there ? Or you just simply ignored it thinking — “wow, cool reaction ! Now I know the concept but I don’t think it’s important enough to memorize it, so let’s just move on to the next part”
- Have you analysed the tables and charts thoroughly or just looked at the chart thinking — “probably some useless stuffs and numbers, I don’t think they are gonna ask some random data in exams, teacher never told us about that”
Most probably… No cut that “probably”… you definitely didn’t do any of that !
And that’s why it didn’t make any difference