Calcium oxide reacts with water to form calcium hydroxide. What type of reaction is this?
Answer and explanation
Correct answer: Combination reaction
In the reaction \\(\mathrm{CaO + H_2O \rightarrow Ca(OH)_2}\\), two reactants, calcium oxide and water, combine to form one product, calcium hydroxide. Therefore, it is a combination reaction. In a decomposition reaction, one compound breaks down into two or more simpler substances, whereas substances are combining here.
Frequently asked questions
What is the correct answer to this question?
Combination reaction
Why is this the correct answer?
In the reaction \\(\mathrm{CaO + H_2O \rightarrow Ca(OH)_2}\\), two reactants, calcium oxide and water, combine to form one product, calcium hydroxide. Therefore, it is a combination reaction. In a decomposition reaction, one compound breaks down into two or more simpler substances, whereas substances are combining here.
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.
