12th English Objective 100 Mar is an Android application developed by OSS: Our Smart Study. As the name suggests, it is a study aid for Bihar Board 12th grade students studying English. The application is free of charge and falls under the Education & Reference category.

The application includes objective questions for both the prose and poem sections of the English syllabus. The prose section covers 11 chapters, including Indian Civilization and Culture, Bharat is my Home, A Pinch of Snuff, and How Free is the Press. The poem section covers 10 chapters, including Sweetest Love I Do Not Goe, Song of Myself, and My Grand Mother's House. The objective questions are aimed at helping students prepare for their exams and score better marks.