A gas reacts with ${\rm{CaO}}$, but not with ${\rm{NaHC}}{{\rm{O}}_3}$. The gas is:

NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

1 Easy

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Analyzing +4 | -1

A gas reacts with

\mathrm{CaO}

, but not with

\mathrm{NaHC}{\mathrm{O}_3}

. The gas is:

View answer and explanation

Correct option: B

\mathrm{C}{\mathrm{l}_2}

Option A (

CO_2

) is correct because it reacts with CaO (a basic oxide) to form

CaCO_3

, but does not react with

NaHCO_3

(a weak base).