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An annexure is a supplement or appendix to a written document. You don't need to fill them. The detailed explanation of JOSAA annexure 2(a) and 2(b)are explained below-

ANNEXURE 2(a) - Performance in Class XII (or equivalent) examination (Applicable only for candidates seeking admission toIITs)

Candidates must PASS class XII exam with the following subjects:

1. Physics
2. Chemistry
3. Mathematics
4. A language
5. Any subject other than the above four

ANNEXURE 2(b) - Performance in Class XII (or equivalent) examination (Applicable only for candidates seeking admission to NITs/IIITs, IIEST Shibpur and other GFTIs)

1. Candidates must PASS class XII exam with the following subjects:

(a) For B.E./B.Tech. programmes

(i) Physics

(ii) Mathematics

(iii) Any one of Chemistry, biology, biotechnology, technical vocation subject.

(iv) A language

(v) Any subject other than the above four

(b) For B. Planning programmes:

(i) Mathematics

(ii) Other four subjects

(c) For B. Arch. programmes:

(i) Mathematics, Physics, Chemistry

(ii) Other two subjects

2. The candidates who have appeared in the Class XII (or equivalent) Board examination in the year 2018, 2019 or appearing in 2020 will be eligible for admission through JoSAA-2020 provided they fulfill all other eligibility requirements.