hii ,

to apply for guest lecturer in polytechnic college Ambikapur it would be better if you go to their website and search it in the career section of their site or if you do not find any thing then you can also write an email to the college with your CV attached .

for colleges through jee mains rank use the jee college predictor - https://engineering.careers360.com/jee-main-college-predictor?ici=cp-listing_engineering&icn=JEE-Main-College-Predictor