If a container becomes cold and gas also evolves what is the most careful conclusion?
Answer and explanation
Correct answer: Gas formation may indicate a chemical reaction, and the process may have absorbed heat
Gas evolution may indicate the formation of a gaseous product during a chemical reaction. A cold container suggests that the process may have absorbed heat from its surroundings and may therefore be endothermic. Hence, option A is the most careful conclusion. Option B is incorrect because a heat-releasing reaction would generally tend to make the container or surroundings warmer. Exam tip: When evidence is limited, prefer cautious statements such as “may” over statements claiming certainty.
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What is the correct answer to this question?
Gas formation may indicate a chemical reaction, and the process may have absorbed heat
Why is this the correct answer?
Gas evolution may indicate the formation of a gaseous product during a chemical reaction. A cold container suggests that the process may have absorbed heat from its surroundings and may therefore be endothermic. Hence, option A is the most careful conclusion. Option B is incorrect because a heat-releasing reaction would generally tend to make the container or surroundings warmer. Exam tip: When evidence is limited, prefer cautious statements such as “may” over statements claiming certainty.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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