Continue to contribute in NPS as volunteer, will this contribution go in tier i or tier two?

In my previous organisation i was a part of NPS, i changed the organisation where EPF is there. my query is-
(a) if i continue to contribute in NPS as volunteer, will this contribution go in tier i or tier two?
(b) is there any limit to contribution ie amount ?
(c) i will be getting income tax rebate?

a) Yes. You must be having a PRAN
Tier 1
You need to activate tier 2 for depositing money .
b) No
c) Yes upto Rs 150000 sec 80 C
https://www.policybazaar.com/life-in...-need-to-know/