Chemistry - Complete s-block Question with Solution | TestHub
ChemistryComplete s-blocks-block IIAMedium2 minQB
ChemistryMediumsingle choice
Which of the following statement is incorrect -
Options:
Answer:
C
Solution:
BeO and MgO are used as refractory materials because they have high melting points and can withstand high temperatures.
The statement says they have low melting points, which is incorrect.
Be and Mg are kinetically inert towards oxygen due to the formation of a protective oxide layer.
Mg reacts with hot air to form MgO and Mg₃N₂, while Be does not react with water easily due to a protective oxide film.
Therefore, the incorrect statement is (C)
Stream:JEESubject:ChemistryTopic:Complete s-blockSubtopic:s-block IIA
⏱ 2mℹ️ Source: QB
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