Please Help Chemistry Question?

What sub division of chemistry(inorganic, biochemistry, analytical, organic, and physical) is each of the following situations:

*investigating a way to make stronger plastiv grocery bags
*developing a better insulin-delivery system for diabetics
*determining the minerals present in a soil sample
*using an acid etch metal
*creating a cleaner burning heating fuel

Answer:
If I had to describe it with career title words...


1. engineering, research and development
2. engineering, medical
3. biochemistry/agricultural
4. industrial, research and development
5. engineering
1. analytical
2. biochemistry
3. organic
4. inorganic
5. physical
Organic --> investigating a way to make stronger plastiv grocery bags
Biochemistry -->developing a better insulin-delivery system for diabetics
Analytical --> determining the minerals present in a soil sample
Physical --> using an acid etch metal
Inorganic --> creating a cleaner burning heating fuel

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