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Reactive metals storage: Under which liquid is metallic sodium safely stored? Prevent rapid reaction with air moisture and oxygen. Choose the correct storage medium.

Difficulty: Easy

Petrol
Alcohol
Water
Kerosene (liquid paraffin)

Correct Answer: Kerosene (liquid paraffin)

Explanation:

Given data

Metal: Sodium (highly reactive alkali metal).

Concept/Approach
Sodium rapidly oxidises and reacts with water; it is stored immersed in an inert hydrocarbon such as kerosene/liquid paraffin that excludes air and moisture.

Reasoning
Water → violent reaction; alcohols → reactive; petrol is flammable/less standard.

Final Answer
Kerosene (liquid paraffin)

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