Assertion: When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.
Reason: Copper reacts with dilute sulphuric acid to form blue Copper(II) sulfate solution.

Both assertion and reason are false

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The assertion is true but the reason is false

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Both assertion and reason are true. The reason is the correct explanation of the assertion.

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Both assertion and reason are true. The reason is not the correct explanation of the assertion.

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Solution

The correct option is A
Both assertion and reason are false

The explanation for Correct Option:
Assertion:
According to the reactivity series, copper is found at the bottom of hydrogen.
Its reduction potential is higher than hydrogen i.e. it does not displace hydrogen from the non-oxidizing agent.
Therefore, copper won't be able to displace hydrogen during the reaction.
As a result, no reaction will occur and the color of the solution does not change.
The explanation for the reason:
Since hydrogen has a high reactivity than copper no reaction will occur when a piece of copper metal is added to diluted sulfuric acid.
Hence, Both assertion and reason are false. So the correct option is (A).

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Similar questions

Give reasons for the following:
(i) In the contact process, sulphur trioxide formed is dissolved in 98% sulphuric acid and not in water.
(ii) When solution of sulphur dioxide is exposed to air, it gets converted to sulphuric acid.
(iii) When diluting concentrated sulphuric acid, the acid should be added to water and not water to the acid.
(iv) When concentrated sulphuric acid is exposed to air, its volume increases and it becomes slightly dilute.
(v) Sulphuric acid can form two kinds of salts with sodium chloride.
(vi) When barium chloride is added to dilute sulphuric acid, a white precipitate is formed.
(vii) When carbon is heated with concentrated sulphuric acid, carbon dioxide is formed.
(viii) Ammonia gas cannot be dried by passing through concentrated sulphuric acid.
(ix) When concentrated sulphuric acid is added to sugar/glucose, a black mass is left behind.
(x) Concentrated sulphuric acid should not be added to oxalic acid or formic acid in the open laboratory.
(xi) When concentrated sulphuric acid is added to blue crystalline copper sulphate, it turns powdery white.
(xii) Concentrated sulphuric acid must be stored in airtight bottles.
(xiii) Cotton clothes get burnt with concentrated sulphuric acid.
(xiv) H₂SO₄ cannot be prepared by heating sodium sulphate with conc. HCl or HNO₃.

Q. What happens when dilute sulphuric acid reacts with a copper plate?

what happens when

a) dilute sulphuric acid is poured on a copper plate?

b) iron nails are placed in blue copper sulphate solution?

Hydrogen gas is evolved when copper turnings are added to dilute sulphuric acid.

Name the following:

(a) Gases obtained by treating carbon with hot concentrated sulphuric acid.

(b) Substance which turns from blue to white, when concentrated sulphuric acid is added to it.

(d) Solution obtained by dissolving sulphur trioxide in 98% sulphuric acid.

(e) Products obtained by treating ferrous sulphide with dilute sulphuric acid.

(f) The precipitate obtained by treating aqueous lead nitrate with dilute sulphuric acid.

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Assertion: When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.Reason: Copper reacts with dilute sulphuric acid to form blue Copper(II) sulfate solution.

Assertion: When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.
Reason: Copper reacts with dilute sulphuric acid to form blue Copper(II) sulfate solution.