Hi monisha2208,
Business Schools are sometimes willing to "take chances" on applicants who come from none-traditional backgrounds, as long as those applicants can show that they have the necessary qualifications to apply and appear to be able to handle the academic "side" of the Program. You're asking a rather broad series of questions though, so it would help if you provided a bit more details about your timeline and goals.
1) What is your goal score on the GMAT?
2) When are you planning to take the GMAT?
3) When are you planning to apply to Business School?
4) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich