Assertion (A) Zinc reacts with sulphuric acid to form zinc sulphate and hydrogen gas and it is displacement reaction. Reason (R) Zinc reacts with oxygen to form zinc oxide.

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Assertion-ReasonDisplacement Reaction in ChemistryReaction of Metals with Dilute AcidsCBSE PYQ

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A student performs the following experiment in his school laboratory. List two observations to justify that in this experiment a chemical change has taken place.

TextDefinition of Chemical ReactionReaction of Metals with Dilute Acids

"Displacement reactions also play a key role in extracting metals in the middle of the reactivity series." Justify this statement with two examples.

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