Which of the following are applications of Hydrogel?
1. Hygiene products such as toothpaste
2. Medical applications like contact lenses and drug delivery systems
3. Industrial lubricants such as those used in air conditioning
4. Solar panel coatings for enhanced efficiency
5. Microplastic removal from water
Select the correct answer using the code given below:
1
1, 2, and 3 only
2
1, 2, 3, and 5 only
3
2, 3, 4, and 5 only
4
1, 3, 4, and 5 only