Hello,

The eligibility criteria for SSC CGL is that:

• Any graduate candidate in any discipline can apply for the SSC CGL exam.
• Also, the candidates who are appearing for their final year exams can apply for SSC CGL.
• The age of the candidates needs to be between 18 years to 32 years.

So, a second year student can not appear in the examination. You need to be in the final year of graduation or have completed your graduation  to appear for the exam. Also, remember for different post the education criteria and age criteria are different. For more details about it, check the link below

https://competition.careers360.com/articles/ssc-cgl-eligibility-criteria

Good luck!