GATE
| https://qualifygate.com/study-material/ https://www.gatexplore.com/study-material/ |
GRE
| https://www.ets.org/gre/revised_general/prepare/?WT.ac=gre_prepare_170731 https://www.veritasprep.com/gre/free-gre-resources/ |
IELTS
| https://www.ieltsidpindia.com/information/online-ielts-study-material https://www.britishcouncil.it/en/exam/ielts/courses-resources/free-online-english-preparation-material |
TOEFL
| https://www.ets.org/toefl/ibt/prepare/ |
Civil
Service
| https://byjus.com/free-ias-prep/ https://www.clearias.com/ias-study-materials/ https://www.civilserviceindia.com/study-material.html |