Hello Pratap,

If you are familiar with the contents of a standard Philosophy course taught at the B.A. (Hons.) level then exam will be easy to crack.
 You should have good grasp of themes and issues listed below both from the Indian and Western philosophical perspectives.

Metaphysics /Ontology:

Being and Becoming; Appearance and Reality; Abhāva; Substance; Theories of

Consciousness; Self, Non-Self, and Other; Brahman, Ātman and Jagat; Personal

Identity; Freewill and Determinism; Causation; Potentiality and Actuality; Time and

Space; Existence of God.

Epistemology and Logic:

Different Theories, of Knowledge; Pramānas and Pramānyavāda; Theories of Error;

Truth and Meaning; JTB and Gettier's Problem; Certainty, Fallibility and Scepticism;

Laws of Thought; Classification of Proposition; Categorical Syllogism; Truth Tables;

Formal Proofs of Validity; Venn Diagram; Quantification.

Ethics, Social and Political Philosophy:

Purushārthas; Rta, Rna and Yagya; Goodness; Justice and Virtues; End and

Means; Duty and Obligation; Ethical Theories (Normative and Metaethics); Themes

of Applied Ethics; 'Non-violence; Marginalization and Discrimination; Secularism;

Liberty, Equality and Rights; Nationalism; Globalization. 

Exam Pattern: You will have to answer 100 objective and subjective type questions. Negative marking will be applicable.

You can also refer the below given link for the further information.

https://university.careers360.com/articles/jnu-exam-pattern

Good Luck!