In May 2025, DRDO’s DMSRDE laboratory in _________ created an advanced polymeric membrane designed for high-pressure desalination of seawater.

The correct answer is Kanpur.

Step-by-Step Explanation:

1. Context of the Innovation:
Defense Research and Development Organisation (DRDO)’s research laboratory, the Defence Materials and Stores Research and Development Establishment (DMSRDE), is located in Kanpur, Uttar Pradesh.

2. Key Accomplishment:
DMSRDE developed an advanced polymeric membrane engineered specifically for high-pressure reverse osmosis (RO) desalination of seawater. This technology plays a critical role in producing potable water from saline sources efficiently under challenging environmental conditions.

3. Conclusion:
Therefore, the DMSRDE laboratory responsible for this breakthrough is situated in Kanpur.