science chapter 1 class 10 mcq

22 Invention of pasteurisation 1. edward jenner 2. louis pasteur 3. flemming 4. ronald ross

21 Vector for 'Plasmodium' is 1. female anopheles mosquito 2. male anopheles mosquito 3. female culex mosquito 4. male culex mosquito

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

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