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Chemical Reactions and Equations Quiz

Class X
Science
Chemical Reactions and Equations
12 questions
MEDIUM

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Preview questions

1. What is a chemical reaction?

A change in physical state · A process that changes substances into new substances · A mixture of elements · A physical change

2. Which of the following is a characteristic of a chemical reaction?

Change in color · Change in size · Change in shape · Change in texture

3. In a chemical equation, what does the arrow represent?

The reactants · The products · The direction of the reaction · The catalyst

4. Which of the following is a reactant in the reaction: 2H2 + O2 → 2H2O?

H2O · O2 · H2 · Both H2 and O2

5. What type of reaction is represented by the equation: A + B → AB?

Decomposition reaction · Combination reaction · Displacement reaction · Redox reaction