i got 70000 rank in mains General what seat will i get ?

Please tell your home state also. However without considering that, I'll try to clarify your doubt.
Based on josaa 4th round closing ranks, you might get:-

NIT Jalandhar- textile engg. (home state), Industrial and process engg.(HS)

Nit Agartala- all branches(HS)

Nit Goa- civil(HS)

Nit Hamirpur-chem. engg(HS), civil(HS), material sc. engg(HS), mech engg(HS), dual degree ECE(HS)

Nit Meghalaya- all except cse(HS)

NIT Puducherry-all branches(HS)

NIT Raipur- Biotech, metallurgy, mining,biomedical (all HS)

Nit Sikkim, mizoram,manipur and Nit arunachal pradesh- all branches(HS)

NIT Silchar-civil(HS), electr and instrum. engg(HS)

NIT Srinagar- all branches(HS) except CSE

Hello Aditya,

Based upon your JEE Mains rank you can surely get good institutionns including NIT also. You may not get totp level NIT's but mid level NIT's like NIT Meghalaya, NIT Poducherry  etc. are possible. Even you get seat in CFTI's like HBTU, PEC, etc. You may also try for LNMIIT and JIIT noida if possible.

All the best !

Unfortunately you cannot get nits and IIITs .

As even the closing rank for new nits are 40 thousand for general category so

You have many opportunities like go for state colleges many accept JEE main score.

You can go for Thapar University Jadavpur University and also Jaypee University

Dear Aditya,your rank is not so good,there are no chances of getting NITs,GFTis,etc.You can get these colleges only by some homestate quota that too for lower ranked NITs.I advice you to look after state govt. colleges of your state as these are also very good.Every state has different process of counselling so keep updated.Hope this helps.You can use this predictor https://engineering.careers360.com/jee-main-college-predictor

Thanks.