Forensic Medicine · Medical Jurisprudence and BNS/BNSS/BSA Sections

Under the Mental Healthcare Act (MHCA) 2017, which provision is MOST relevant for a forensic psychiatry evaluation of an accused person pleading not guilty by reason of mental illness?

  • A Section 103 MHCA — advance directive for voluntary patients
  • B Section 89 MHCA — mental illness as a defence in criminal proceedings requires a report from a mental health professional
  • C The accused can plead insanity only under BNSS Section 328 (fitness to stand trial) and not substantively under BNS
  • D Sections 20–22 BNS — legal insanity defence under BNS 2023 replacing IPC Section 84
Correct answer: D. Sections 20–22 BNS — legal insanity defence under BNS 2023 replacing IPC Section 84

Explanation

Under BNS 2023, the legal defence of insanity is covered by Sections 20–22 BNS: Section 20 covers acts of a person of unsound mind (corresponding to IPC 84 — nothing is an offence if done by a person who was incapable of knowing the nature of the act or that it was wrong or contrary to law by reason of unsoundness of mind). The MHCA 2017 Section 89 deals with treatment of mentally ill prisoners, not primarily the insanity defence. BNSS Section 328 addresses fitness to stand trial (corresponding to CrPC Section 328). The substantive insanity defence is a BNS question; fitness to plead is a BNSS question.

Reference: The Essentials of Forensic Medicine and Toxicology (Narayan Reddy), 34th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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