# Questions with detailed step by step solutions from Chemical Reactions

##### Questions in Chemical Reactions
1. In a chemical reaction, $2HgO\to 2Hg+{{O}_{2}}$. What changes are observed at the end of the reaction ?
2. Consider a reaction: $CaO+{{H}_{2}}O\to Ca{{\left( OH \right)}_{2}}$. What is the name of this reaction ?
3. What kind of reaction is this $CuC{{O}_{3}}\to CuO\text{ }+\text{ }C{{O}_{2}}$ ?
4. Which of the following could be an example of combination reactions ?
5. Name the reaction given below. $NaOH+HCl\to NaCl\text{+}{{H}_{2}}O$
6. A catalyst is used to
7. The substance like Molybdenum which is added to the catalyst and increases the efficiency of reaction is called
8. Enzymes
9. Which of the following is an example of endothermic reaction ?
10. Which of the following is an example of exothermic reaction ?