IIT

Hi Deepak,
The Indian Institutes of Technology (IITs) are autonomous public institutes of higher education, located in India.[1] They are governed by the Institutes of Technology Act, 1961 which has declared them as institutions of national importance alongside National Institutes of Technology[2] and lays down their powers, duties, and framework for governance etc.[3][4] The Institutes of Technology Act, 1961 lists twenty-three institutes (after the last amendment in 2016).[5] Each IIT is an autonomous institution, linked to the others through a common IIT Council, which oversees their administration. The Minister of Human Resource Development is the ex-officio Chairperson of IIT Council.[6] As of 2017, the total number of seats in all IITs is 11,032.[7]
The first IIT was set up in Kharagpur in 1951, and soon later in Bombay, Madras, Kanpur and Delhi. An IIT was then established in Guwahati in 1994. The University of Roorkee was converted to IIT Roorkee in 2001. Eight new IITs were set up in Gandhinagar, Jodhpur, Hyderabad, Indore, Patna, Bhubaneswar, Ropar, and Mandi in 2008-09. Around the same time the Institute of Technology, Banaras Hindu University was given IIT status. Another six new IITs in Tirupati, Palakkad, Dharwad, Bhilai, Goa and Jammu, approved through a 2016 bill amendment were established in 2015-16, along with the conversion of ISM Dhanbad to IIT.
All the best.

Hello Ruthran,
The eligibility conditions are:
An applicant must have a Master's degree in engineering/technology with marks/CPI not below the specified minimum, or a Bachelor's degree in engineering or science (4 year programme) with a minimum of 75 percent marks/7.5 CPI, or Master's degree in science or an allied area, satisfying each of the following criteria:
(a) a minimum of 65 percent marks/6.5 CPI in the master's degree,
(b) first division in Bachelor's degree, and
(c) JRF/95 percentile or higher in GATE.
However, a valid GATE score is needed for the candidates with a Bachelor's degree in engineering, if they have not graduated from a CFTI (Centrally Funded Technical Institute).
Once you satisfy this eligibility criteria, you may get a call for test/interview depending upon some objective shortlisting by the admission committee. This shortlisting is purly objective, e.g. if they are too many applicants they sort them by their performance in the last degree.
After that, usually every IIT conducts a written test which is along the line of GATE. Based on this test, those whose written test scores are above a certain threshold gets an interview.
This interview usually tries to judge how likely are you to succeed in doing a good research and therefore get a degree. Apart from your fundamentals in some core undergraduate subjects, your analytical skills and your line of thinking is taken into account before deciding to make you an offer.