Prelims 2024

Q. 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:
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
Correct answer: (d) 1, 2 and 3

Question from UPSC Prelims 2024 GS Paper

Explanation:

1. Controlled drug delivery in patients:

As mentioned before, this is a well-known application of hydrogels. Their ability to absorb water and release substances in a controlled manner makes them ideal for drug delivery systems.

2. Mobile air-conditioning systems:

Hydrogels are indeed used in some mobile air-conditioning systems, particularly in evaporative cooling applications. They can help in moisture retention and gradual water release, which can enhance cooling efficiency.

3. Preparation of industrial lubricants:

Hydrogels are used in some specialized industrial lubricants, especially where water-based lubrication is preferred. They can provide unique properties like water retention and controlled release of lubricating agents.

UPSC All In One App
Get UPSC Prelims PYQ, Mains Model Answer, Test Series, Short Notes. Click to Install !!