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The P-Block Elements

Question
CBSEENCH12011243
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Which of the following oxide is amphoteric?

  • SnO2

  • CaO2

  • SiO2

  • CO2

Solution

A.

SnO2

SnO2 is an amphoteric oxide because it reacts with acids as well as bases to form corresponding salts. 
SnO2 +4HCl → SnCl4 +2H2O
SnO2 + 2 NaOH → Na2SnO3 + H2O

Some More Questions From The p-Block Elements Chapter

Mention the conditions required to maximise the yield of ammonia.

What is the covalency of nitrogen in N2O5?

Bond angle in PH4+ is higher than that in PH3. Why?

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.

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