Question
State the principle of centrifugation. Give its two applications.
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How is typhoid tested?
What are the various forms of energy?
State and explain in brief the four major factors, which are causes of disease.
What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy.
Define diarrhoea. Give an account of occurrence, symptoms, prevention and control of this ailment.