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Chemistry CBSE Live product
Class 10 (2025-26)
Chemical reaction and equations
Annual Revision V - Chemical reactions and equations
1.
Characteristics of chemical reaction
Question:
1
m.
Select the correct answer:
During a lab experiment, Arun mixes dilute \(HCl\) with zinc granules. The test tube becomes warm and bubbles appear. Which of the following observations and inference are correct?
Endothermic process with no new substance
Gas evolution and heat release
Physical change and heat absorption
Gas evolution only; no chemical change
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