Exposure to sulphur dioxide (SO2) in chimney/flue gases commonly leads to material and process impacts including fabric deterioration, accelerated metal corrosion, and adverse effects on paint drying—identify the correct overall assessment.

Introduction / Context:Sulphur dioxide is a major combustion by-product when sulfur-bearing fuels are burned. In the atmosphere or within industrial environments, SO2 and its oxidation products can damage materials and interfere with surface-coating processes.

Given Data / Assumptions:

• SO2 may oxidize to sulfuric acid aerosols in moist air.
• Materials exposed include metals, fabrics (leather/cloth), and painted surfaces.
• Question asks whether these effects co-occur.

Concept / Approach:SO2 promotes corrosive environments (acidic condensation) that increase metal corrosion rates. Fabrics and leather are susceptible to chemical attack and discoloration under SO2/acidic mists. Paint films can experience curing interference or surface defects due to acid gases and particulate sulfates, altering drying/hardening characteristics.

Step-by-Step Solution:

Verification / Alternative check:Industrial hygiene and corrosion references report multi-material susceptibility in SO2-rich atmospheres; urban pollution control often targets SO2 specifically for such reasons.

Why Other Options Are Wrong:

Common Pitfalls:Attributing all damage solely to particulate matter; ignoring humidity’s role in acid formation.

Final Answer:All of the above effects occur