Hello Surekha,
If you have interest in management then you can surely pursue MBA as it has very wide scope in various fields such as,
1)Total Quality Management

• Quality Control Executive.
• Quality Lead.
• Quality Superviser.
• Quality Engineer.

2)Project Management

• Process Analyst.
• Team Leader.
• Project Engineer.
• Administrator.

3)Healthcare Services Management

• Hospital Administrator.
• General Manager.
• Manager-Operations.
• Junior Administrator.
• Human Resource Management
• Training Co-ordinator.
• Manager Staffing.
• Compensation and Benefits Manager.
• HR Recruiters.
• Marketing Manager
• Brand Manager.

Your decision to go for MAT or ATMA is good as most of the top institutes conduct their admission process based on score of these entrance exams.
Along with this you have to prepare for GD for admission of MBA and following link will help you for that,
http://www.bschool.careers360.com/articles/gd-topics-for-mba
All the Best

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