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‘25 volume’ hydrogen peroxide means

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100 mL marketed solution contains 25 g of H₂O₂

1L marketed solution contains 75 g of H₂O₂

1L marketed solution contains 25 g of H₂O₂

1L marketed solution contains 250 g of H₂O₂

answer is B.

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Detailed Solution

25 volume H₂O₂ means:- 1 Lit of H₂O₂ on decomposition give 25 Lit of O₂ at STP
$2 H_{2} O_{2} \to 2 H_{2} O + O_{2}$
$10 volume H_{2} O_{2} \to 30 grams / Lit$
$25 volume H_{2} O_{2} \to ?$
$= \frac{25 \times 30}{10} = 75 gms / Lit$

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