hello 

lalith gargeya 

sir actually to get IIT you clear the JEE mains first later on you should clear the JEE advance then you can except the IIT sir 

if you clear only the JEE mains then you can except the NIT's IIIT's 

all the best

hello lalith gargeya, 

no, you can't get admission in IIT's through jee mains only.you should give jee advanced after get qualified through jee mains.please refer this link,

https://engineering.careers360.com/articles/jee-advanced-cutoff-for-iits

copy above link and paste it in the address bar of your browser.

all the best!

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Thank you!!!:)