Dear Sumedha,
You know ,why u r so tensed?
Because u have n't have tat much confident in urself that u will crack ur exams with good marks and the reason behind this ,lies in urself.
If any one in this blog is going to post questions( no matter the weightage is), then u will also feel the same pressure.
See, examination temperment is n't build in a day or two, u have to sustain and nurture it........
For that first of all clear ur fundamentals and then apply them in various problems and i think till ur main exam u will be confident enough to clear the exams (whatever it may be) with flying colours.
Hope it will help u...............
Cheers!!!!!!!!!
Rishab