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Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other?

1. is a reducing agent
2. is soluble in water
3. is used as a food-preservative
4. forms 'acid-rain'

Correct answer: is a reducing agent

Solution

Sulphur dioxide acts as a reducing agent, while nitrogen dioxide does not exhibit this property. This distinguishes the two compounds.

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