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9. This green chemistry principle explains that chemical products must be
designed to maintain their function while minimizing toxicity is....

a. Reduce derivatives

b. Less hazardous chemical synthesis
c. Designing safer chemicals
d. Safer solvents and auxiliaries

e. Design for degradation

10. Which is not a form of contribution to the principles of green chemistry

is.....
a. Use chemicals sparingly

b. Dispose of chemicals in their place
c. Storing chemicals the right way

d. Replacing harmful chemicals with natural materials that are more

environmentally friendly
e. Always use plastic as a storage place

11. Among the following daily activities that are against the principles of

green chemistry are . . .
a. Choose to use leaves to wrap food instead of plastic

b. Prefer a mosquito racket instead of using mosquito coils

c. Walk or bike to travel short distances instead of using a motorbike
d. Clean up trash by burning it in the trash

e. Choose waste according to its type, stockpile organic waste, and
dispose of inorganic waste in the trash

12. Among the following gases that have the largest contribution to the

greenhouse effect are: . . .
a. Carbon monoxide

b. Nitrogen oxide
c. Hydrocarbons