Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 General Science Chemistry Chemical Bond and Molecular Structure
Calcium oxide reacts with water to form calcium Hydroxide. Which type of reaction is this?
1
Combination and endothermic reaction
2
Combination and exothermic reaction
3
Decomposition and Endothermic reaction
4
Decomposition and exothermic reaction