hii ,

the average salary of mechanical engineer in india ranges from 200000 - 350000 yearly although your salary will depend on the skills and knowledge you acquire during your studies , their are companiese that pay you 500000 - 600000 yearly such as maruti , mahindra , tata motors and some even pay 1200000 yearly like IOCL , HPCL , so you get paid for the skills you acuire and internships you do .

for udates of jee mains colleges you can refer to - https://engineering.careers360.com/jee-main-college-predictor?ici=cp-listing_engineering&icn=JEE-Main-College-Predictor