One must make utmost try to avoid science subjects.

I am a science student and considering my previous education i opted for Botany. My marks for Botany remained 114 (2002); 150 (2005) and 105 (2006).

The marks in science subjects remain uncertain.

A friend of mine is gold medalist in MSc Chemistry and he was able to secure merely 90 marks in Chemistry paper of CSS 2005.

Therefore, if someone is having option to opt out other optionals then one must try to avoid science subjects. Otherwise one can go for science subjects.

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'Thee woh ik shakhs kay tasawar saay - abb woh ranayee khayal kahaan'