Post-UTME Chemistry 2009 Objective — Question 3
Question 3 of 16 from the Post-UTME Screening (Post-UTME) Chemistry 2009 Objective paper, with the correct answer and a full explanation.
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Water was added to sodium dioxonitrate (V) salt in a test tube and the test tube became cold. The reaction is
- A. Reversible
- B. Exothermic
- C. endothermicCorrect
- D. explosive
Explanation
The test tube becoming cold indicates heat was absorbed from the surroundings, i.e. an endothermic reaction.
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