In which of the following are hydrogels used? 1. Controlled drug delivery in patients 2. Mobile…
In which of the following are hydrogels used? 1. Controlled drug delivery in patients 2. Mobile air-conditioning systems 3. Preparation of industrial lubricants. Select the correct answer using the code given below:
1 only
1 and 2 only
2 and 3 only
1, 2 and 3
Solution
Hydrogels are used in controlled drug delivery, in mobile/automotive air-conditioning systems (desiccant cooling) and in the preparation of industrial lubricants — all three applications are valid.