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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:


Assertion (A): When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.


Reason (R): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution.

  • a)
    Both Assertion (A) and Reason (R) is false

  • b)
    Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

  • c)
    Assertion (A) is true but reason (R) is false.

  • d)
    Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).  

Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Directions: In the following questions, a statement of assertion (A) i...
When a piece of copper metal is added to dilute sulphuric acid, then it shows no reaction at normal temperature. It is because, copper reacts only with heated sulphuric ac to form blue copper (W) sulphate solution and reason is  

false as copper cannot displace hydrogen , as it is less reactive than it
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Most Upvoted Answer
Directions: In the following questions, a statement of assertion (A) i...
Assertion (A): When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.

Reason (R): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution.

The correct answer is option A, which states that both the assertion (A) and the reason (R) are true, and the reason (R) is the correct explanation of the assertion (A).

Explanation:

1. Assertion (A) is true: When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue. This can be observed in a laboratory setting when copper is added to dilute sulphuric acid. The color change occurs due to the formation of a compound called copper (II) sulphate, which is blue in color.

2. Reason (R) is true and the correct explanation of assertion (A): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution. The reaction between copper and dilute sulphuric acid can be represented by the following equation:

Cu + H2SO4 → CuSO4 + H2O + SO2

In this reaction, copper (Cu) reacts with dilute sulphuric acid (H2SO4) to form copper (II) sulphate (CuSO4), water (H2O), and sulfur dioxide (SO2). The formation of copper (II) sulphate is responsible for the blue color of the solution.

Thus, the reason (R) provides a correct explanation for the assertion (A).

To summarize:
- When copper metal is added to dilute sulphuric acid, the solution turns blue.
- This is because copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution.
- The reaction can be represented as Cu + H2SO4 → CuSO4 + H2O + SO2.
- The formation of copper (II) sulphate is responsible for the blue color of the solution.

Note: It is important to carefully read the assertion and reason statements and evaluate their accuracy and relationship before selecting the correct option.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.Reason (R): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution.a)Both Assertion (A) and Reason (R) is falseb)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).Correct answer is option 'A'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.Reason (R): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution.a)Both Assertion (A) and Reason (R) is falseb)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).Correct answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.Reason (R): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution.a)Both Assertion (A) and Reason (R) is falseb)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.Reason (R): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution.a)Both Assertion (A) and Reason (R) is falseb)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).Correct answer is option 'A'. Can you explain this answer?.
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