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The P-Block Elements

Question
CBSEENCH12011298
Wired Faculty App

which of the following oxides is not expected to react with sodium hydroxide?

  • B2O3

  • CaO

  • SiO2

  • BeO

Solution

B.

CaO

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, B2O3 and BeO are amphoteric oxides, SiO2 is a acidic oxide and CaO is a basic oxide. Therefore, NaOH does not react with CaO.

Some More Questions From The p-Block Elements Chapter

Write a balanced equation for the hydrolytic reactions PCl5 in heavy water.

What is the basicity of H3PO4?

What happens when H3PO3 is heated?

List the important source of sulphur.

Write the order of thermal stability of the hydrides of Group 16 elements.

Why is H2O a liquid and H2S a gas?

Which of the following does not react with oxygen directly?
Zn, Ti, Pt, Fe

Complete the following reactions
(i) C2H4 + O2 →
(ii) 4Al + 3O2 →

Why does O3 act as a powerful oxidising agent?

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