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Read the following statements carefully ...

Read the following statements carefully and identify X, Y and Z respectively.
(i) X is stored under kerosene.
(ii) Y catches fire on exposure to air and is stored in water.
(iii) Z does not react with cold or hot water but reacts with steam.

A

Na, Mg, Cu

B

Na, P, Fe

C

Cu, Zn, K

D

Zn, Cu, Na

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to identify the substances X, Y, and Z based on the given statements. ### Step-by-Step Solution: 1. **Identifying X:** - The statement says "X is stored under kerosene." - We know that certain metals, particularly alkali metals, are highly reactive with water and air. - Sodium (Na) is one such metal that is stored under kerosene to prevent it from reacting with moisture and oxygen in the air. - **Conclusion:** X = Sodium (Na) 2. **Identifying Y:** - The statement says "Y catches fire on exposure to air and is stored in water." - This describes a substance that is highly reactive with air and can ignite spontaneously. - Potassium (K) is an alkali metal that reacts vigorously with air and is often stored in water to prevent it from reacting with moisture and oxygen. - **Conclusion:** Y = Potassium (K) 3. **Identifying Z:** - The statement says "Z does not react with cold or hot water but reacts with steam." - This indicates a metal that is not reactive with water in its liquid form but can react with water vapor. - Iron (Fe) is known to react with steam to form iron oxide and hydrogen gas, while it does not react with cold or hot water. - **Conclusion:** Z = Iron (Fe) ### Final Answers: - X = Sodium (Na) - Y = Potassium (K) - Z = Iron (Fe)
To solve the problem, we need to identify the substances X, Y, and Z based on the given statements. ### Step-by-Step Solution: 1. **Identifying X:** - The statement says "X is stored under kerosene." - We know that certain metals, particularly alkali metals, are highly reactive with water and air. - Sodium (Na) is one such metal that is stored under kerosene to prevent it from reacting with moisture and oxygen in the air. ...
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