Q68 / 270 · NDA 2022 (Phase 2) · General Ability

Which one of the following is the correct reactivity series with water?

Correct answer
A
Zinc $ \gt $ Iron $ \gt $ Lead $ \gt $ Copper
B
Copper $ \gt $ Lead $ \gt $ Zinc $ \gt $ Iron
C
Copper $ \gt $ Zinc $ \gt $ Iron $ \gt $ Lead
D
Zinc $ \gt $ Copper $ \gt $ Iron $ \gt $ Lead

Solution

The correct sequence of reactivity with water is, Zinc $ \gt $ Iron $ \gt $ Lead $ \gt $ Copper. Water-reactive substances are those that spontaneously undergo a chemical reaction with water, as they are highly reducing in nature. Examples include alkali metals, lithium through caesium, and alkaline earth metals, magnesium through barium.

Hence, the correct answer is option: 'A'.

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