Hello sridev if you not known the answer then not need to provide wrong information....stupid.

Irrespective of the fact whether you 'think' its right or wrong, the fact is that you cannot be termed pass if you have a subject lagging behind. That is the principle the academic world runs by. You need to pass each subject individually and then score the required aggregate in Physics, Chemistry and Biology for your Category. NTA follows this rule. For clarification you may visit the official website