Three metals X, Y and Z are given. X reacts with cold water, hot water and steam. Y reacts with hot water and steam and Z reacts with steam only. Identify X, Y, and Z from the below options.

X:- Sodium

Y:- Zinc

Z:- Magnesium

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X:- Copper

Y:- Magnesium

Z:- Zinc

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X:- Magnesium

Y:- Zinc

Z:- Potassium

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X:- Sodium

Y:- Magnesium

Z:- Zinc

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Solution

The correct option is D
X:- Sodium

Y:- Magnesium

Z:- Zinc

Order of reactivity of metals will be Sodium ( $N a$ ) > Magnesium ( $M g$ ) > Zinc ( $Z n$ )

Sodium is a very reactive metal. Therefore, it reacts readily with cold water, hot water and steam.

Magnesium, being less reactive, does not react with cold water and it reacts slowly with hot water and vigorously with steam.

Zinc, being very less reactive, does not react with cold water or hot water but it reacts with steam.

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