Water was added to sodium dioxonitrate \((\mathrm{V})\) salt in a test tube and the test tube became colD. The reaction is ____________
A. reversible B. exothermic C. endothermic D. explosive
Correct Answer: C
Explanation
The test tube became cold because heat was drawn/absorbed from the surrounding. A reaction during which heat is released into the surrounding is said to be exothermic while the one during which heat is absorbed from the surrounding is said to be endothermic
