Question

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 sulphate solution
Both A and R are true and R is the correct explanation for A
Both A and R are true and Ris not the correct explanation for A
A is true but Ris false
O A is false but R is true​

Answer 1

Answer:

Both A and R are false.

Explanation:

I believe you got this question from Oswaal. The answer given in the booklet is option A. However, I believe it is wrong. Copper is present lower in the reactive series than Hydrogen, therefore it cannot react with sulphuric acid and copper sulphate will not be be formed.

Answer 2

Both Assertion and Reason are false.

• In order to determine the reactivity of copper we can infer the reactivity series. As per the reactivity series it can be observed that copper lies on bottom of hydrogen.
• Hence, during the reaction copper won't be able to displace hydrogen.
• Therefore, When a piece of copper metal is added to dilute sulphuric acid no reaction will take place because reactivity of hydrogen is more than copper.
• So, Both Assertion and Reason are false.