Statement: A recent study shows that children below five die in the cities of developing countries mainly from diarrhea and parasitic intestinal worms.Courses of Action:I. Governments of the developing countries should take adequate measures to improve the hygienic conditions in the cities.II. Children below five years in the cities of the developing countries need to be kept under periodic medical check-ups.
Correct answer: D. Both I and II follow
- A. Only I follows
- B. Only II follows
- C. Either I or II follows
- D. Both I and II follow
Explanation
Improving hygiene (Action I) is a crucial preventative measure that addresses the root cause of these diseases. Periodic medical check-ups (Action II) are an important curative and monitoring measure to treat existing cases and prevent deaths. Both actions are necessary.
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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