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Question

There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why?

1. They can accumulate in the environment, and contaminate water and soil.
2. They can enter the food chains.
3. They can trigger the production of free radicals.

Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

Answer:

D

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Explanation:

Statement 1 is correct. Nanoparticles of certain chemical elements used in industry can accumulate in the environment, leading to contamination of water and soil. These nanoparticles may have adverse effects on ecosystems and organisms.

Statement 2 is correct. Nanoparticles can enter the food chains through various pathways, including uptake by plants and ingestion by animals. This can result in the presence of nanoparticles in the food we consume.

Statement 3 is correct. Nanoparticles have the potential to trigger the production of free radicals, which are highly reactive and can cause damage to cells and tissues. This can have implications for human health and the environment.

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