SSC Delhi Police Constable Driver 2025 Mock Test People Development & Environment Hazards and Disasters Other kinds of Disasters

COVID-19 के लिए कौन सा वायरस जिम्मेदार है?

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सार्स-कोव-2
2
टीबी-कोव-2
3
सार्स-कोव-1
4
एच2एन2
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