Which of the following is not an application of nano-materials
1)TV and computer monitors
2)Cardiology
3)Magnetic Resonance Imaging (MRI)
4)Sunscreens and fuel cells
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Answer:
In sunscreens and fuel cells Nano materials are not applicable.
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(d). Sunscreens and fuel cells are not an application of Nano-materials.
Explanation:
- When titanium dioxide and zinc oxide nanoparticles clump together when mixing with sunscreen, nanoparticles retain their very effective UV light-absorbing power, and others absorb and scatter visible light, making them transparent on the skin.
- Sunscreens with zinc oxide scatter the sun's rays, reducing potentially harmful UV radiation from reaching the skin.
- Because zinc oxide sunscreens stay on the skin and physically block the rays, doctors refer to them as "physical" sunscreens.
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