GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chlorine is produced
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Nothing happens
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The copper displaces the magnesium
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None of the above
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Detailed explanation-1: -When we add copper turning to a solution containing magnesium chloride, there are chances that no reaction occurs. There are also chances that copper will displace magnesium from magnesium chloride to form cupric chloride and magnesium metal.
Detailed explanation-2: -Mg is more reactive metal but Cu is less reactive metal. On the other hand, dil. HCl has no oxidation property. Hence, Cu cannot replace H from HCl.
Detailed explanation-3: -When aluminium metal is added to magnesium chloride solution, no displacement reaction takes place since aluminium is less reactive than magnesium.
Detailed explanation-4: -When magnesium is placed in copper sulfate solution a redox reaction occurs, causing copper metal to form on the magnesium and the deep blue colour of the solution pales. If you place a copper strip in a solution of magnesium sulfate, no reaction occurs.
Detailed explanation-5: -In transformers and many electric machines we wound copper over the core.Copper turnings are simply the copper that is used for this.Their properties are such that it suits the machine.