Is preparation of SSC SGL possible along with Bsc in BHU? Will I get enough time for the preparation along with BSc?
The preparation for SSC CGL can be done alongside B.Sc. if and only if you invest your time in both of them properly.
A good knowledge and score in B.Sc. will help you lifelong. Also, if you are determined to go with job directly after gaining Bachelor's degree, you can divide half of your studying time straight for its preparation from various practice material.
Joining a competitive coaching class might me a good option for those pursuing B.A., but if you're pursuing/planning to pursue B.Sc., you need to put some extra dedicated efforts in it too.
Hope this helps,
All the best.
