In 2018 i clear my CTET in obc ncl catagory, but now in 2025 i am not able for obc ncl catagory because of my father's salary status, then i able or not able for applying in kvs prt job?

If you cleared CTET in 2018 under the OBC-NCL category, that certificate remains valid for eligibility as long as CTET validity rules allow it. However, for KVS PRT recruitment, your category is decided based on your current OBC-NCL status, not the one you had in 2018. Since you mentioned that in 2025 you no longer fall under OBC-NCL due to your father’s income, you will be treated as a General category candidate for KVS recruitment. You can still apply for the PRT post, but you must apply under the General category and will not get OBC-NCL reservation benefits. The CTET certificate is still usable; only the reservation category will change as per your present income and eligibility. All the best!