Q75 of 104 Page 41

The most common carrier of communicable diseases is:

Housefly is most common carrier of communicable diseases. The houseflies feed on garbage, animal excreta and dead organic matter. Diseases cholera and tuberculosis spread by housefly.

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The process of conversion of sugar into alcohol is called:

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Which of the following is an antibiotic?

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The carrier of malaria causing protozoan is:

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The vaccine for smallpox was discovered by: