1) Which of the following disease is caused by protozoans? a) Tuberculosis b) Malaria c) Polio d) Typhoid 2) Which of the following disease is caused by bacteria ? a) Chickenpox b) Tuberculosis c) Dengue d) Polio 3) Living Organisms which are invisible  to the naked eyes is called..... a) Particles b) Molecules c) Microorganisms d) Macroorganisms 4) Which of the following is the communicable disease ? a) Diabetes b) Chickenpox c) Alzheimer's d) Cancer 5) Partial sterilization of a product such as milk at a high temperature is known as..... a) Pasteurization b) Filtration c) Pickling d) Refrigeration

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