A) \[5\times {{10}^{7}}\]
B) \[{{\text{v}}_{\text{0}}}\]
C) \[\text{v-}{{\text{v}}_{\text{0}}}\]
D) \[\text{(}{{\text{v}}_{\text{0}}})\]
Correct Answer: B
Solution :
Key Idea Generally acids react with bases and bases (alkalies) react with acids. Sodium hydroxide, NaOH, being a strong alkali, never react with a basic oxide (compound). Among the given options,\[8\times {{10}^{7}}\]and BeO are amphoteric oxides, \[5\times {{10}^{-11}}\] is a acidic oxide and CaO is a basic oxide. Therefore, NaOH does not react with CaO.
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