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To get selected as a GD in BSF, you need to qualify for the SSC GD exam with a good score. You should allocate at least six months to studying for this test. To get selected for the SSC GD you can use the following advice from professionals:
1. To understand the requirements for the exam, go through the exam pattern and syllabus before beginning your preparation.
2. There is only one computer-based test (CBT) for the SSC GD which is followed by a physical and medical examination.
3. Finish the exam's syllabus within the first three months.
4. Make notes on crucial topics like coding and decoding, number series, Mensuration profit and loss, etc.
5. To ace the Hindi and English language sections, you have to study grammar and vocabulary from good English books.
6. One month before the exam, take as many mock exams as possible.
7. Start engaging in physical activities and exercises to help you pass the required medical and physical tests. The following Shiksha page has a detailed preparation strategy to help you pass the SSC GD exam: https://www.shiksha.com/exams/ssc-gd-exam-preparation.

The subject code for Environmental Science is 89 in UCG NET. To qualify for the NET exam in Environmental Science, you have to pass Papers 1 and 2. For Paper 1, any good aptitude book by either KVS Madan, Arihant Experts, or Harpreet Kaur will do. The books recommended for environmental Science are as follows:
1. Introduction to Environmental Engineering by Gilbert M. Masters
2. Statistical Method by S. P Gupta
3. Environment Chemistry by Stanley E. Manahan
4. Environment Ecology by E. P ODUM
5. Principles of Biochemistry Voet, Pratt and Voet
6. Non-conventional Energy Sources GD Rai
7. Any good publication that solves previous year's questions
You can prefer other books also, but your focus should be on covering the syllabus, which is as follows:
1. Fundamentals of Environmental Sciences
2. Environmental Chemistry
3. Environmental Biology
4. Environmental Geosciences
5. Energy and Environment
6. Environmental Pollution and Control
7. Solid and Hazardous Waste Management
8. Environmental Assessment, Management and Legislation
9. Statistical Approaches and Modelling in Environmental Sciences
10. Contemporary Environmental Issues.

To be admitted to the International Center for Distance Education and Open Learning (HP, you must submit an online application. The admissions procedure for ODL programs is as follows:
1. Visit the official website of ICDE and click on the admission portal.
2. Select PG, UG certificate or Diploma to SEE a list of programs for which you want to apply.
3. Click on the course name for which you are want to apply
4. Complete the online application and upload the necessary documents.
5. After submitting your application form, you need to pay the course fee.
6. The university will send you a confirmation email along with the next procedure's details.
7. You can also connect to the helpline number provided on the help desk if you need assistance during any step. Most of the time, the admission procedure and instruction guidelines are available with every course at the official portal.

MCA Master of Computer Applications is a professional master s degree in computer Science. It focuses on providing a theoretical as well as practical training to students in the related field. Computer Applications is the use of a computer to solve a problem or to accomplish a particular job. This course is designed to meet up with the demand for qualified professionals in the IT field. The MCA course comprises of four contents like Mathematics behind Computer sciences, concepts in core computers and systems Science, non core computer courses and software development or design. One can pursue MCA after the completion of a Bachelors degree. Basically, the graduates of Bachelors of Computer Applications BCA pursue MCA. The course emphasis on the latest programming languages and tools to develop better and faster applications. BCA makes a base while MCA adds a specialised touch in the subjects studied in B.A. Any graduate who has passed or appearing for the final year degree examination in any discipline Science, commerce, arts, engineering or any approved university is eligible to apply. Candidates must have mathematics as a subject in their 10 plus 2 course or any one year of graduation. If you continue B.A. Then try to hold good percentage marks. Then go for BCA and then try next to MCA. Because there is no way to take direct admission in MCA. In this days may some institutions may offering. Hope this information is helpful for you.