JEE Main 2017 · 9 Apr · Shift 1 · Chemistry Q43

ChemistrySingle correct+4 / -1Question 43 of 90

Which one of the following is an oxide ?

\ce{KO2}

\ce{BaO2}

\ce{SiO2}

\ce{CsO2}

Answer and worked solution

Official answer: C

$\ce{SiO2}$ contains $\ce{O^2-}$ -type oxygen (a normal oxide). $\ce{KO2}$ and $\ce{CsO2}$ are superoxides and $\ce{BaO2}$ is a peroxide.

JEE Main 2017 · 9 Apr · Shift 1, Chemistry question 43