The answer is “No” .This is because according to India-Nepal Friendship treaty of 1950, Indian Citizens doesn’t require any passport for travelling to Nepal but they require some form of identification (An ID Card,PAN or Aadhaar) declaring that you are an Indian Citizen!
Incase if you are travelling by Air to Nepal then carry any one of these for identification (Any 1 is fine)
- PAN Card
- Aadhaar Card
- Voters ID Card
- License issued by a state Government
- Passport itself
Incase if you are travelling by “Road”, then you don’t need any of these.
To be sure, be check with travel operators or Airlines before boarding a flight or going by Road