Adaptive Practice
Chemical Reactions
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Easy
What is a chemical reaction?
Easy
Which of the following is an example of a chemical reaction?
Medium
In the reaction of vinegar and baking soda, what gas is produced?
Medium
Which of these indicates a chemical reaction has taken place?
Medium
What is the role of a catalyst in a chemical reaction?
Hard
Which of the following is NOT a sign of a chemical reaction?
Medium
In the reaction 2H₂ + O₂ → 2H₂O, what are the reactants and products?
Hard
Why does iron rust faster in the monsoon season in India?