Solution:Chemical Weapons Convention (CWC):A. False – The CWC was opened for signature in 1993 and entered into force in 1997, not in 2003.
B. True – The CWC consists of a Preamble, 24 Articles, and 3 Annexes, outlining obligations, definitions, and verification mechanisms.
C. True – The Convention includes a “challenge inspection” mechanism allowing any State Party to request an on-site inspection if it suspects another of non-compliance.
D. True – The CWC has a verification regime for specific toxic chemicals and their precursors, categorized into Schedules 1, 2, and 3, based on their potential use in chemical weapons.
Thus, statements B, C, and D are correct.