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Which of the following can be used to prevent the decomposition of H2O2 ?

1. (1) Urea
2. (2) Formaldehyde
3. (3) Formic acid
4. (4) Ethanol

Correct answer: (1) Urea

Solution

Hydrogen peroxide is stabilized against decomposition by adding small amounts of stabilizers such as urea (also glycerol, acetanilide, sodium stannate/pyrophosphate). Among the options, urea is the correct stabilizer.

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