Which one of the following is NOT correctly matched?

The correct answer is C. The Attorney General of India is dealt with under Article 76, which sits in Part V (The Union), not Part XIII. Part XIII covers Trade, Commerce and Intercourse within the territory of India (Articles 301 to 307), so this pairing is wrong.

The other three pairings are right:

• Fundamental Duties – Part IVA: added by the 42nd Amendment (1976) through Article 51A.
• The States – Part VI: Articles 152 to 237 cover the Governor, the State Executive, the State Legislature and the High Courts.
• Services under the Union and States – Part XIV: Articles 308 to 323, covering All India Services and the Public Service Commissions.

Core concept: the Part-wise map of the Constitution. This matters for Mains when you discuss the Union-State balance or the independence of constitutional offices. Keep the map in your head, because it lets you reason out a question even when you forget a specific article number.

Trap: Aspirants treat the Attorney General as a central office and assume it belongs in the Union part. Here the question asks for the Part number, and Part V is correct, not Part XIII.