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UPSC Civil ServicesPrelims2024General Studies Paper I
Question
QQ36. 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 :
Options
- A 1 only
- B 1 and 2 only
- C 2 and 3 only
- D 1, 2 and 3
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Correct Answer
A 1 only
Model Answer
Answer: option A, as per UPSC's final answer key (Series A).