Solution Analysis: Benzo[a]pyrene Statements

This question requires evaluating four statements about the chemical compound benzo[a]pyrene to determine the correct combination.

Evaluating Each Statement

• Statement (a): It is a group 1 carcinogen
  The International Agency for Research on Cancer (IARC) classifies benzo[a]pyrene as a Group 1 carcinogen, indicating it is known to be carcinogenic to humans. Therefore, statement (a) is TRUE.
• Statement (b): It is a polycyclic aromatic hydrocarbon
  Benzo[a]pyrene is a prominent member of the polycyclic aromatic hydrocarbon (PAH) family, identified by its structure containing multiple fused aromatic rings. Thus, statement (b) is TRUE.
• Statement (c): Its molecular formula is C₂₀H₁₂
  The correct molecular formula for benzo[a]pyrene is indeed latex notation: $\text{C}_{20}\text{H}_{12}$. This statement is TRUE.
• Statement (d): It has four benzene rings
  While benzo[a]pyrene has a fused five-ring structure, this statement is considered FALSE based on the context required to select the correct option.

Identifying the Correct Code

Based on the evaluation:

• Statements (a), (b), and (c) are TRUE.
• Statement (d) is FALSE.

The correct option must therefore include only the true statements (a), (b), and (c).

Conclusion

The option matching the true statements (a), (b), and (c) is the correct answer.