A grosso has a group of soloists, rather than just one.

Ihave no idea what are some of the examples

The answer to your question is true

Material safety data sheetswhen working with any type of chemical the should be posted in a conspicuous place in the work areamsdsif a material does pose a health hazard teachers shouldobserve appropriate precautions when they or their students handle the materialmsds are available fromproduct manufacturesmsds sheets must beavailable in shop/science classes at all times