Hello Aspirant! According to your rank, getting any colleges under the JOSAA or CSAB counselling would be quite difficult. If your home state is Haryana or Mizoram you may get NIT Kurukshetra or Mizoram. Getting any other college wouldn't be possible. You may try in JAC Chandigarh counselling, you may get lower branches in those colleges. You may get lower branches in some GFTI's like Assam University, Tezpur University but chances are moderate to low.
You can also use this link to predict your colleges:
https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

Hi aspirant, since you have got 21000 SC category rank in your JEE mains exam so based on that let me tell you that at this rank range most probably you may can get any good GFTI also with some lower NIT's. Now to identify those Institutes you may can take help of below mentioned link;

https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

Thank You.

Hello Aspirant,

See on such SC rank you have very less or almost no chances to get any of the NITs or GFTIs or IIITs because the closing SC ranks were around 11-13K

You can check out previous year's cut-offs from the official website of JOSAA as given below :-

https://josaa.nic.in/Result/Result/currentorcr.aspx

Now if you appeared for JEE-Advance 2021 then you must have got your result so to have a list of all those colleges which you can get based upon JEE-Advance 2021 score you can use JEE-Advance College Predictor:-

https://engineering.careers360.com/jee-advanced-college-predictor?icn=QnA&ici=qna_answer

JEE-Advance 2021 cut-offs are mentioned below :-

>>> Common rank list (CRL) - 10.0 (Minimum percentage of marks in each subject) - 35.0 (Minimum percentage of aggregate marks)

>>> GEN-EWS rank list - 9.0 - 31.5

>>> OBC-NCL rank list - 9.0 - 31.5

>>> SC rank list - 5.0 - 17.5

>>> ST rank list - 5.0 - 17.5

>>> CRL-PwD rank list - 5.0 - 17.5

>>> GEN-EWS-PwD rank list - 5.0 - 17.5

>>> OBC-NCL-PwD rank list - 5.0 - 17.5

>>> SC-PwD rank list - 5.0 - 17.5

>>> ST-PwD rank list - 5.0 - 17.5

>>> Preparatory course rank lists - 2.5 - 8.75

If you are not in the race of JEE-Advance then I would recommend you to either go for state counselling for autonomous government colleges or for private colleges or you can prepare for further attempts of JEE-Main and to help you in your preparation we have some resources which you can access from the link given below :-

https://learn.careers360.com/jee-main-coaching/?utm_source=%20QnA

Note that the above prediction is made on the basis of latest cut-offs available on official website of JOSAA or CSAB and the cut-offs are bound to change every year depending upon various factors such as the number of candidates appearing in an examination, the number of candidates qualifying an examination, difficulty level of the paper, and so on.

To have a list of all those colleges which you can get based upon your marks, category, and state you can use JEE-Main College Predictor:-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

I hope this information helps you.

Good Luck for your future!!