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Chemistry - Complete s-block Question with Solution | TestHub

ChemistryComplete s-blocks-block IAEasy2 minPYQ_2025

ChemistryEasysingle choice

Identify the element forming peroxide on reaction with oxygen.

Options:

Answer:

Solution:

Sodium (Na) reacts with oxygen to form sodium peroxide ( $N a_{2} O_{2}$ ).

$2 N a + O_{2} \to N a_{2} O_{2}$

Carbon (C) forms oxides such as carbon monoxide ( $CO$ ) and carbon dioxide ( $C O_{2}$ ).

Argon (Ar) and Helium (He) are noble gases and do not react with oxygen.

Answer: Na

Stream:MHT_CETSubject:ChemistryTopic:Complete s-blockSubtopic:s-block IA

⏱ 2mℹ️ Source: PYQ_2025

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