www.indembassyisrael.gov.in/...enRe&subid=o...
"Q: Is a transit visa required if one is not leaving the immigration area of the airport in
India?
A: No, but only up to 10 hours.
You need a transit visa if you have stay in the immigration area beyond 10 hours.
Irrespective of the waiting time, you need to have a transit visa if you want to cross the immigration area.
Transit Visas are issued for 72 hours and applicable fees is 100 NIS."
