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Q.

A metal X forms a salt XSO4. The salt XSO4 forms a clear solution in water which reacts with sodium hydroxide solution to form blue precipitates Y. Metal X is used in making electric wires and alloys like brass. The metal X is


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a

Iron

b

Aluminium

c

Copper

d

Magnesium 

answer is B.

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Detailed Solution

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A metal X forms a salt XSO4. The salt XSO4 forms a clear solution in water which reacts with sodium hydroxide solution to form blue precipitates Y. metal X is used in making electric wires and alloys like brass. The metal X is copper.
The salt forms a clear solution in water which reacts with sodium hydroxide solution to form a blue precipitate made of metal copper. Copper is used in making electric wires and alloys like brass. Copper and zinc make up brass. Therefore, the metal X is copper. Its reaction is given as
2NaOH+CuSO4Na2SO4+Cu(OH)2   
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A metal X forms a salt XSO4. The salt XSO4 forms a clear solution in water which reacts with sodium hydroxide solution to form blue precipitates Y. Metal X is used in making electric wires and alloys like brass. The metal X is