Law: Substantive and Procedural Criminal Law
Law is the highest-weight domain of the UPPSC Assistant Prosecution Officer examination. It covers substantive criminal law and the procedural law of investigation, trial and evidence. Since 1 July 2024 the Bharatiya Nyaya Sanhita (BNS), Bharatiya Nagarik Suraksha Sanhita (BNSS) and Bharatiya Sakshya Adhiniyam (BSA) have replaced the IPC, CrPC and Evidence Act; the syllabus and older question patterns still use the older names, so prepare the corresponding provisions together.
Core rules
- Substantive law: mens rea and actus reus must concur. Culpable homicide is defined in Section 299 IPC and murder in Section 300 IPC; the difference lies in the degree of intention and knowledge and in the exceptions to Section 300.
- Procedure: an FIR is recorded under Section 154 CrPC (now Section 173 BNSS); a magistrate orders remand under Section 167; bail is governed by Sections 437–439.
- Evidence: hearsay is generally inadmissible; a confession to a police officer is not proved (Section 25, Evidence Act); dying declarations are relevant under Section 32(1).
Worked example
'A hits B on the head with a lathi during a sudden quarrel, without premeditation, and B dies.' Reasoning: the sudden fight and absence of cruelty may bring the case under Exception 4 to Section 300 IPC, reducing the offence to culpable homicide not amounting to murder, punishable under Section 304. The trap is labelling every unlawful death as murder.
Traps
- Confusing cognizable with non-cognizable, and bailable with non-bailable offences.
- Quoting old section numbers without the new BNS/BNSS equivalent.
- Mixing the criminal standard of proof ('beyond reasonable doubt') with the civil standard ('preponderance of probabilities').