Explanation:

Only codes 1,2&3 are correct.

• Operation Maitri (2015): It is the joint relief and rescue operation by the Indian government and the Indian Armed forces in the aftershock of the 2015 Nepal earthquake.

• Operation Sankat Mochan (2016): During the South Sudanese Civil War, the Indian Air Force conducted Operation Sankat Mochan to evacuate Indian citizens and other foreign nationals from South Sudan.

• Operation Devi Shakti (2021): An evacuation operation by the IAF was kicked off in 2021 to safely bring back Indian nationals from Afghanistan after the collapse of the Islamic Republic of Afghanistan. 

• Operation Ganga (2022): It is an evacuation mission to bring back all the Indian nationals who are currently stranded in Ukraine.

Hence option 3rd is correct.