Consider the following statements :
- Other than those made by humans, nanoparticles do not exist in nature.
- Nanoparticles of some metallic oxides are used in the manufacture of some cosmetics.
- Nanoparticles of some commercial products which enter the environment are unsafe for humans.
Which of the statements given above is/are correct ?
1 only
3 only
1 and 2
2 and 3
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC IAS – 2022
Statement 2 is correct. Nanoparticles of metallic oxides, such as titanium dioxide (TiO₂) and zinc oxide (ZnO), are commonly used in cosmetics, particularly in sunscreens, due to their ability to absorb and scatter UV light.
Statement 3 is correct. There are ongoing concerns about the potential environmental and health risks associated with nanoparticles from commercial products entering the environment, due to their small size, high surface area, and unique properties which can lead to different biological interactions and potential accumulation in tissues.