As you said you have completed B.tech and want to do M.tech from IIT Bombay, so , on your demand here I am telling IIT bomaby offred M.tech program infollowing branches :

Aerospace Engineering
Biosciences & Bioengineering
Chemical Engineering
Civil Engineering
Computer Science & Engineering
Earth Sciences
Electrical Engineering
Mechanical Engineering
Metallurgical Engineering & Materials Science (MM)
Cross Departmental Programme- Materials, Manufacturing and Modeling (MMM)
Center of Studies in Resources Engineering
Energy Science & Engineering
Industrial Engineering & Operations Research
Systems & Control Engineering
Environmental Science & Engineering
Centre For Technology Alternatives For Rural Areas(CTARA) (Technology And Development)

Key dates for admission
Availability of Application form 17 Mar 2016
Last date for receipt of completed application form 05 Apr 2016

Address
Indian Institute of Technology Bombay(IITB),
Powai,Mumbai-400 076.
+91-22-2572 2545. Fax:+91-022-2576 4041