The new mask made of copper nanoparticles

Indian Scientists develop  biodegradable face masks to fight COVID-19

Indian scientists from ARCI, Department of Science and Technology (DST), Government of India, in association with the Centre for Cellular & Molecular Biology (CSIR-CCMB), and…

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Classic Hindi Riddles

तीतर के २ आगे तीतर, तीतर के २पीछे तीतर,आगे तीतर, पीछे तीतर,बोलो कितने तीतर? ********** हरी थी मन भरी थी, लाल मोती जड़ी थी, राजा…

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