NEET UG CHEMISTRY MCQ: S-BLOCK ELEMENTS

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\mathrm{K}{\mathrm{O}_2}

is used in oxygen cylinder in space air craft and submarines because it:

View answer and explanation

Correct option: A

Absorbs

\mathrm{C}{\mathrm{O}_2}

and increase

{\mathrm{O}_2}

content

Option A (Absorbs

\mathrm{C}{\mathrm{O}_2}

and increase

{\mathrm{O}_2}

content) is correct because potassium superoxide reacts with carbon dioxide to produce oxygen, thereby purifying the air.

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\mathrm{BaCl}_{2}

\mathrm{Na}_{3} \mathrm{PO}_{4}

\mathrm{Ba}_{3}\left(\mathrm{PO}_{4}\right)_{2}

\underset {\text{(dilute)}}{Ba(OH)_2}+H_2O_2+ClO_2 \longrightarrow