Hello Santhosh,

Kindly check the below links for the 2018 Question paper & Answer key for Geology and Geophysics subject:

Question paper: https://images.careers360.mobi/sites/default/files/GATE-2018-Geology-Geophysics-Question-Paper.pdf

Answer Key: https://images.careers360.mobi/sites/default/files/GATE-2018-Geology-Geophysics-Answer-Key.pdf

For any further and previous year's question paper & answer keys follow the below link: https://engineering.careers360.com/articles/gate-answer-key

All the best!