Carcinogen present in coal tar is

Options

A. Nitrosodimethylene
B. 3,4-benzpyrene
C. 2-naphthylamine
D. 4-amino biphenyl

Answer

**Step-by-Step Solution:**

1. **Understanding Carcinogens**: Carcinogens are substances that can lead to cancer in living tissue. They can be found in various forms, including chemicals, radiation, and certain viruses.

2. **Identifying Coal Tar**: Coal tar is a thick, black liquid produced from the carbonization of coal. It is a byproduct of the production of coke and coal gas and is often associated with the use of tobacco products.

3. **Components of Coal Tar**: Coal tar contains a variety of harmful chemicals, including polycyclic aromatic hydrocarbons (PAHs), which are known to be carcinogenic.

4. **Analyzing the Options**: The question provides four options regarding the carcinogen present in coal tar:
- A) Nitrosodimethylene
- B) Tripobenzovirine
- C) 2-Naphthylamine
- D) Amino biphenyl

5. **Identifying the Correct Carcinogen**: Among the options, polycyclic aromatic hydrocarbons, particularly benzopyrene, are known carcinogens found in coal tar. The most relevant carcinogen from the options provided is **B) Tripobenzovirine**, which is a synonym for 3,4-benzopyrene, a well-known carcinogen.

6. **Conclusion**: Therefore, the correct answer to the question "Carcinogen present in coal tar is" is **B) Tripobenzovirine**.

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