Among statements I-IV, the correct ones are I. Decomposition of hydrogen peroxide gives dioxygen II. Like hydrogen peroxide, compounds, such as KClO ,Pb(NO ) and NaNO when heated liberate dioxygen. II

Question

Among statements I-IV, the correct ones are I. Decomposition of hydrogen peroxide gives dioxygen II. Like hydrogen peroxide, compounds, such as KClO ,Pb(NO ) and NaNO when heated liberate dioxygen. III. 2-Ethylanthraquinone is useful for the industrial preparation of hydrogen peroxide. IV. Hydrogen peroxide is used for the manufacture of sodium perborate 3 3 2 3 2 2 2 2 2 2 2 2 3 2 3 2 2 2 3 2 2 2 4 7 2 2 3 2

(A) I,II, III and IV
(B) I, II and III only
(C) I, III and IV only
(D) I and III only

Prashant Kotian · Accepted Answer

Correct answer: D) I AND III ONLY. Decomposition of H O : 2H O (l) → O (g)+2H O(l) Industrially, H O is prepared by the auto-oxidation of 2-alklylanthraquinols. 2KClO 2KCl + 3O 2Pb(NO ) 2PbO + 4NO + O 2NaNO → 2NaNO + O Synthesis of sodium perborate: Na B O + 2NaOH + 4H O → 2NaBO + 5H O

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