Which chemical is classified as less toxic?

The classification of toxicity among chemicals often considers their potential impacts on human health and the environment. Picric acid and trinitrotoluene (TNT) are both considered less toxic in certain contexts compared to other highly hazardous substances like hydrochloric acid, which is a corrosive acid and can cause severe burns and respiratory issues if inhaled.

Picric acid, while it can pose risks due to its explosive nature and requires careful handling, is less acutely toxic compared to hydrochloric acid in certain scenarios. Trinitrotoluene, primarily recognized for its explosive properties, is also less toxic in terms of immediate health risks compared to strong acids or corrosives.

In this context, the correct classification of less toxic chemicals emphasizes that both picric acid and trinitrotoluene can be classified as having a lower immediate health hazard compared to hydrochloric acid, particularly when accounting for their handling and exposure scenarios.