Q. Which of the following oxides is not expected to react with sodium hydroxide?
A) CaO
B) SiO₂
C) BeO
D) B₂O₃
Explanation
[Solution from source] CaO is a basic oxide and does not react with the base NaOH. SiO₂ and B₂O₃ are acidic oxides and BeO is amphoteric, so all three dissolve in NaOH. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.