Question

Which of the following is true about the two statements?

$StatementI:$ Reactivity of aluminium decreases when it is dipped in nitric acid

$StatementII:$ A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid

• A. $I$ is correct and $I$ is incorrect
• B. $I$ is incorrect but $I$ is correct
• C. Both the statements are correct and $II$ is also the correct explanation of $I$
• D. Both the statements are correct but $II$ is not correct explanation of $I$

Answer 1

Answer: (C)

Both the statements are correct and $II$ is also the correct explanation of $I$

When $Al$ is dipped in $HN{O}_3$, it forms layer of $A{l}_2{O}_3$ which decrease the reactivity of $Al$.