GK
ELEMENTS COMPOUNDS SUBSTANCES METALS AND NON METALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Zinc sulphate formed
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Zinc chloride formed
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Copper sulphate formed
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Copper chloride formed
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Detailed explanation-1: -a) When dilute sulphuric acid is poured on a copper plate, no reaction will take place. This is because Copper (Cu) lies below hydrogen in the reactivity series.
Detailed explanation-2: -(a) Copper does not react with dilute sulphuric acid. So, no reaction will take place when diluting sulphuric acid is poured onto a copper plate. But when concentrated sulphuric acid is poured onto a copper plate, effervescence is observed.
Detailed explanation-3: -The blue coloured copper sulphate crystals turn white when treated with sulphuric acid. This is due to the nature of the acid.
Detailed explanation-4: -We add a few drops of dilute sulphuric acid to copper sulphate solution during electroplating to increase the conductivity of the solution.
Detailed explanation-5: -Silver only reacts with hot concentrated sulphuric acid which gives Sulphur dioxide and water. But silver does not react with dilute sulphuric acid. So, when dilute sulphuric acid is poured on a silver plate no reaction takes place because acid is dilute not concentrated.