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प्रश्न
Which of the following reacts with cold water vigorously?
विकल्प
Carbon
Sodium
Magnesium
Sulphur
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उत्तर
Sodium
Explanation:
The vigour (or intensity) of reaction of a metal with water depends on its chemical reactivity. Sodium is a very reactive metal, so it reacts violently even with cold water.
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