Among statements (a) - (d), the correct ones are (a) decomposition of hydrogen peroxide gives dioxygen. (b) like hydrogen peroxide, compounds such as \(\mathrm{KCIO}_{3}, \mathrm{~Pb}\left(\mathrm{NO}_{3}\right)_{2}\) and \(\mathrm{NaNO}_{3}\) when heated liberated dioxygen. (c) 2-Ethylanthraquinone is useful for the industrial preparation of hydrogen peroxide (d) Hydrogen peroxide is used for the manufacture of sodium perborate

JEE Main · 2020 · 07 Jan 2020 · Shift 2 · Hydrogen

Among statements (a) - (d), the correct ones are
(a) decomposition of hydrogen peroxide gives dioxygen.
(b) like hydrogen peroxide, compounds such as

KCIO_{3}, Pb (NO_{3})_{2}

and

NaNO_{3}

when heated liberated dioxygen.
(c) 2-Ethylanthraquinone is useful for the industrial preparation of hydrogen peroxide
(d) Hydrogen peroxide is used for the manufacture of sodium perborate

(A)(a), (b), (c) and (d)✓ Correct
(B)(a) and (c) only
(C)(a), (b) and (c) only
(D)(a), (c) and (d) only

Answer: (A)

Solution

All four statements hold. Hydrogen peroxide decomposes to give dioxygen,

2 H X_{2} O X_{2} 2 H X_{2} O + O X_{2}

. On heating,

KClO X_{3}

Pb (NO X_{3}) X_{2}

and

NaNO X_{3}

likewise liberate dioxygen. The anthraquinone process, which uses 2-ethylanthraquinone, is the standard industrial route to

H X_{2} O X_{2}

. And hydrogen peroxide reacts with sodium borate to make sodium perborate. So statements (a), (b), (c) and (d) are all correct.

JEE Main · 2020 · 07 Jan 2020 · Shift 2 · Single correct option

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JEE Main · 2020 · 07 Jan 2020 · Shift 2 · Hydrogen

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