general science mcq

20 The micro organism "plasmodium" causes 1. t.b 2. typhoid 3. malaria 4. polio

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19 Disease causing micro organisms are 1. vectors 2. pathgen 3. microbes 4. all

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18 The milkmaids who developed cowpox develop immunity to 1. typhoid 2. smallpox 3. t.b 4. all

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