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| 1. |
Researchers from which institute claims to have developed a technology for making high-efficiency masks using waste pet bottles? |
| A. | Indian Institute of Technology - Mandi |
| B. | Indian Institute of Technology - Patna |
| C. | Indian Institute of Technology - Guwahati |
| D. | Indian Institute of Technology - Jammu |
| Answer» B. Indian Institute of Technology - Patna | |