Environmental Studies is the systematic, scientific study of the environment in combination with living organisms. To aware the students regarding the importance of our environment and its conservation, all universities have introduced a compulsory paper named- "ABILITY-ENHANCEMENT COMPULSORY COURSE (AECC)- ENVIRONMENTAL STUDIES (AECE101)" for B.Sc. undergraduate Semester-I students from both Science and Arts & Commerce streams. In this junction, the book entitled "Objective Environmental Studies" is a simple collection of probable questions and answers on "Environmental Studies" as per CBCS based syllabus of B.Sc. Semester-I students. This book has been designed to give a preliminary idea about the probable questions and to cater to students of undergraduate. The author also tries to cover multiple-choice based questions (MCQ) that may be helpful for undergraduate students as well as students appearing for various competitive examinations. The subject matter has been presented in a step-by-step systematic manner. Easy, simple, and clear understandable illustrations, correct and latest information are the main features of the book.