Hello Krishna Deepika. Thanks for contacting Careers360.

But, as the question stands currently, it lacks details. That is, 

• We don't know where you are from. 
• We don't know which college you are aiming to study in. 
• As a result, we are unable to guide you further on this matter. 

But, as for I know, colleges do not provide any facility to cancel your application form especially when the exams are less than one month away.

Hope this helps you and all the best!