Hello Dolly....

Thanks for contacting Careers360..

Age Criteria:
There is a lower age limit in WBJEE 2019, however, there is no upper age limit. To apply for WBJEE 2019 the candidates must have completed 17 years of age on December 31, 2019.
Exception: For admission in degree level marine engineering course there is an upper age limit of 25 years as on December 31, 2019.

If this is not followed then you are not eligible for wbjee..Need to appear for next exam 

Hope you understand:)