The sBlock Elements - Result Question 19
####20. Which of the following oxides is not expected to react with sodium hydroxide?
[2009]
(a) $CaO$
(b) $SiO_2$
(c) $BeO$
(d) $B_2 O_3$
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Solution:
- (a) $NaOH$ is a strong alkali. It combines with acidic and amphoteric oxides to form salts. Since $CaO$ is a basic oxide hence does not react with $NaOH$.
