Psychology

It depends on what you mean by a Doctor. If you're asking about a Doctor of Philosophy in Psychology, then yes, you can pursue a PhD in Psychology and get the doctorate degree. You can also become a licensed Clinical Psychologist in India with a Dr. title, but not through MBBS. 
And if you mean a Psychiatrist (Medical Doctor), then the answer is "No". without an MBBS + MD/DNB in Psychiatry, you cannot be a Medical doctor.

The 7 types of Psychology are:

1. Clinical Psychology
2. Cognitive Psychology
3. Developmental Psychology
4. Social Psychology
5. Forensic Psychology
6. Industrial-Organizational (I-O) Psychology
7. Health Psychology

Psychology studies include the scientific understanding of mind and behavior, including an individual's thoughts, feelings, and emotions. The key aspects of Psychology studies are biological influences, social & environmental factors, research techniques, etc.

You can study Psychology in various specialized areas like Clinical Psychology, Cognitive Psychology, Social Psychology, Developmental Psychology, Forensic Psychology, and Industrial Psychology.

Though you don't need to take many entrance exams for master's in psychology programs, you do need to take the General Records Exam. Better known as the GRE, this is a test that evaluates your knowledge in different areas.

If you qualify for exam then you can get the Masters programme in Christ University.