🧷 Last 5 Years Tagline: UPSC repeatedly tests the contrast between “procedure established by law” and “due process of law” through core constitutional philosophy cases.

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Question

In essence, what does ‘Due Process of Law’ mean?

(a) The principle of natural justice
(b) The procedure established by law
(c) Fair application of law
(d) Equality before law

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✅ Correct Answer: (a) The principle of natural justice

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Authentic Classroom Explanation — IAS Monk

“Due Process of Law” is a constitutional principle that insists not merely on the existence of a law, but on the fairness, justness, and reasonableness of both the law itself and the procedure by which it is applied.

At its core, this principle embodies the rules of natural justice, especially:

• Audi alteram partem – the right to be heard
• Protection against arbitrary and irrational State action

Although the Indian Constitution originally adopted “procedure established by law” (Article 21), the Supreme Court, through a series of landmark judgments, infused due process into Indian constitutional law.

The turning point was the Maneka Gandhi v. Union of India (1978) case, where the Court held that any “procedure” under Article 21 must be fair, just, and reasonable, and not arbitrary, fanciful, or oppressive.

Thus, in essence:

• Due Process of Law = Natural Justice + Fair Procedure + Reasonableness
• It goes beyond mere legality and demands substantive fairness

Hence, option (a) is correct.