(B) It has to be kept away from dust as it decomposes in presence of dust. Thus, the option (B) is correct.
(C) Hydrogen peroxide can act as oxidizing as well as reducing agent. For example, in acidic medium, it oxidizes ferrous ions to ferric ions. $2 \mathrm{Fe}^{2+}+\mathrm{H}_{2} \mathrm{O}_{2}+2 \mathrm{H}^{+} \rightarrow 2 \mathrm{Fe}^{3+}+2 \mathrm{H}_{2} \mathrm{O}$
In acidic medium, hydrogen peroxide reduces HOCI to chloride ion. $\mathrm{HOCl}+\mathrm{H}_{2} \mathrm{O}_{2} \rightarrow \mathrm{H}^{+}+\mathrm{Cl}^{-}+\mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}$
Thus, the option $C$ is incorrect.
(D) It decomposes on exposure to light to form water and oxygen. $2 \mathrm{H}_{2} \mathrm{O}_{2} \rightleftharpoons 2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}$
Thus, the option (D) is correct.
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$I.$ In gaseous phase, the vapour pressure of $CH_3COOH$ is less than expected.
$II.$ In benzene, acetic acid dimerises.
$III.\, CH_3OH$ is more viscous than $H_2O.$
$IV.\, CH_3OCH_3$ is non-polar but soluble in water.
Select the correct set of codes using $T$ for true and $F$ for false statements in given sequence.
$(a)$ Photon is a positively charged nuclear particle
$(b)$ Size of nucleus is very small as compared to the size of atom
$(c)$ Photoelectric effect and diffraction show particle nature of light
$(d)$ Planck's constant has same dimensions as angular momentum
The correct statements is/are
$2AB_{2(g)} \rightleftharpoons 2AB_{(g)} + B_{2(g)}$
The degree of dissociation is $x$ and is small compared to $1.$ The expression relating the degree of dissociation $(x)$ with equilibrium constant $K_P$ and total pressure $P$ is