Given below are two statements:

Statement I: Concentration of Formaldehyde in indoor environment can be thousand times higher than outdoor environment.

Statement II: Formaldehyde is a known carcinogen.

In the light of the above statements, choose the correct answer from the options given below  

The correct answer is Both Statement I and Statement II are true.
 Important Points

Statement I: The concentration of Formaldehyde in an indoor environment can be a thousand times higher than in an outdoor environment.

• This statement is true.
• Formaldehyde is a volatile organic compound (VOC) that can be released from various sources in indoor environments, such as building materials, furniture, and household products.
• These sources can contribute to higher concentrations of formaldehyde indoors compared to outdoor environments.

Statement II: Formaldehyde is a known carcinogen.

• This statement is also true.
• Formaldehyde has been classified as a Group 1 carcinogen by the International Agency for Research on Cancer (IARC).
• Prolonged exposure to high levels of formaldehyde has been associated with an increased risk of certain cancers, particularly nasopharyngeal cancer, and leukemia.

Therefore, both statements are true, indicating that the concentration of formaldehyde can be significantly higher indoors compared to outdoors, and formaldehyde is classified as a known carcinogen.