Solved UPSC CDS/OTA Question
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Q · Chemical EquationsMedium · 45s
Which of the following statements correctly describes a balanced chemical equation? 1. It has an equal number of atoms of each element on both sides of the equation. 2. It implies conservation of mass during a chemical reaction. 3. It is necessary to predict the amount of reactants and products involved. Select the correct answer:
TopicChemical Equations
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Q 1 / 30Next question →
Step-by-Step Solution
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A balanced chemical equation satisfies the Law of Conservation of Mass. All atoms are accounted for, and this helps calculate quantities of substances involved.
Final Answer: Option D — 1, 2 and 3