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Since you have only completed 12th I would recommend you to study further and get a graduation degree before applying for job in Indian Railways. To be eligible for some of the best jobs in Indian Railways, you would need a Engineering degree.
Saying that It doesn't mean 12th pass candidates are not eligible for any jobs in Indian Railways. There are Group C and Group D jobs in Indian Railways for candidates with intermediate qualification. But my recommendation would be that you get a graduation degree before applying.
Bachelor degree in Engineering with Mechanical / Electronics or communication branch would open door for better jobs in Indian Railways for you.
The jobs in Group C are:
Ticket Examiner
Trains Clerk
Junior Clerk cum Typist
Ticket Collector Junior Accounts Assistant
Commercial Clerk
Assistant Loco Pilot
Account Clerk cum Typist
Junior Stenographe
In order to get a job, you will have to clear the Railway Recruitment Board (RRB) exam. Each year Indian Railways post ads for vacancies. You will have to make sure that there are jobs that meet your qualification criteria before applying.

Hello Payal,
MBA in airline and airport management provides opportunities to travel meet new people and gain new experiences in all parts of the world. You can get employment in the both the private and government aviation sector in the country. You can work at following posts:
Cargo Manager
Trainer
Aircraft Maintenance Manager
Customer Relationship Manager - Airlines
Territory Manager - Corporate Sales
Aviation Operations Specialist
Security Supervisor / Asst Manager
Grooming & Aviation Trainer
Vendor Management
Aviation Ground Staff Trainer
Assistant Marketing Manager
I hope this answers your question to your satisfaction. If so, kindly upvote this answer. If you have any further questions, kindly revert.

Hello Avinash,
Embryologists study the early growth of living organisms. These workers examine the stages of animal and plant pregnancies in order to observe the development of unborn progeny. At least a bachelor's degree is needed to enter this field, but graduate education is also available.
Students interested in entry-level embryology research assistant positions should obtain a Bachelor of science in embryology. Alternate fields of study include microbiology or biochemistry. A 4-year degree is the minimum level of education needed to work in the field. Master's and doctoral degree programmes focusing on embryology are available. This is the desired education level for those looking to attain research positions. A minor in genetics is extremely beneficial for those entering this field.
Embryology coursework at both the undergraduate and graduate levels is a mixture of classroom lectures and hands-on laboratory work. Primary courses focus on biomedical science, andrology, cell biology and clinical embryology. Other classes may cover ethics, genetics, cryopreservation and laboratory technology. Master's degree and doctorate programmes emphasise the development of writing skills for scientific proposals and journal publications. Many courses involve learning about male and female fertility and infertility, allowing students to develop a clear understanding of the field.
Those with a bachelor's degree in embryology can obtain employment as laboratory technicians or research assistants, working under close supervision and providing assistance to senior staff. Advanced positions are generally reserved for employees with at least master's degree. Doctorate-holders often become the managers and leaders of group research projects. Embryologists with a graduate degree can also enter educational positions, working as professors and teaching students about the field. Potential employers include fertility clinics, universities, hospitals, embryology laboratories, biotechnology firms, government organisations and commercial industries.
I hope this answers your question to your satisfaction. If so, kindly upvote this answer. If you have any further questions, kindly revert.