The provision of adjudication of disputes relating to waters of inter-state rivers or river valleys is laid down in A. Article 237 B. Article 268 C. Article 272 D. Article 262.

The correct answer is: A. Article 237

Article 237 of the Constitution of India provides for the adjudication of disputes relating to waters of inter-state rivers or river valleys. The article states that the President may, at the request of the Governments of two or more States, constitute a tribunal to adjudicate upon any dispute or difference between them regarding the use, distribution or control of the waters of any inter-state river or river valley. The tribunal shall consist of a chairman and two other members, one to be appointed by each of the Governments concerned. The chairman shall be a person who is, or has been, a judge of the Supreme Court or of a High Court. The tribunal shall have the power to make such order as it deems fit, and its decision shall be final and binding on the Governments concerned.

The other options are incorrect because they do not deal with the adjudication of disputes relating to waters of inter-state rivers or river valleys.

• Article 268 deals with the distribution of revenues between the Union and the States.
• Article 272 deals with taxes on income other than agricultural income.
• Article 262 deals with the power of Parliament to make laws with respect to any matter in the Union List.