Shivam took a beaker containing a basic solution and added a metal to the solution. What will happen after the addition of copper metal ?

Hydrogen gas is liberated

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NaOH solution turns blue

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The salt has negative ion composed of metal and oxygen

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All the above

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Solution

The correct option is D
All the above

When metal reacts with a base then hydrogen gas is liberated and a salt is also formed. The salt has negative ion composed of metal and oxygen. In the case of copper the solution turns blue.

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Question 41

What happens when a piece of

(a) zinc metal is added to copper sulphate solution?

(b) aluminium metal is added to dilute hydrochloric acid?

Also, write the balanced chemical equation if the reaction occurs.

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