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Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.
- a)I is correct, but II is incorrect
- b)I is incorrect, but II 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 the correct explanation of I
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Statement I: Reactivity of aluminium decreases when it is dipped in ni...
Aluminium reacts with HNO3 to form a layer of AI2O3 which decreases the reactivity of aluminium.
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Statement I: Reactivity of aluminium decreases when it is dipped in ni...
Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid.
Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.
The correct answer is option 'A', which states that Statement I is correct, but Statement II is incorrect. Let's understand why.
Explanation:
When aluminium reacts with nitric acid, a displacement reaction takes place. The reaction can be represented as follows:
2Al + 6HNO3 → 2Al(NO3)3 + 3H2
In this reaction, aluminium displaces hydrogen from nitric acid to form aluminium nitrate and hydrogen gas is released.
Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid.
This statement is correct. When aluminium is dipped in nitric acid, the reaction occurs at a slow rate. This is because a thin layer of aluminium oxide (Al2O3) is formed on the surface of aluminium, which acts as a protective layer and hinders further reaction between aluminium and nitric acid. This layer prevents the acid from coming into direct contact with the underlying aluminium metal, thus reducing the reactivity of aluminium.
Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.
This statement is incorrect. When aluminium reacts with nitric acid, aluminium nitrate (Al(NO3)3) is formed, but it does not form a protective layer. Instead, the aluminium nitrate dissolves in the nitric acid, forming a homogeneous solution. The formation of aluminium nitrate does not contribute to the formation of any protective layer on the surface of aluminium.
Therefore, Statement I is correct as the reactivity of aluminium decreases when it is dipped in nitric acid due to the formation of a protective layer of aluminium oxide. However, Statement II is incorrect as no protective layer of aluminium nitrate is formed during this reaction.
Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.
The correct answer is option 'A', which states that Statement I is correct, but Statement II is incorrect. Let's understand why.
Explanation:
When aluminium reacts with nitric acid, a displacement reaction takes place. The reaction can be represented as follows:
2Al + 6HNO3 → 2Al(NO3)3 + 3H2
In this reaction, aluminium displaces hydrogen from nitric acid to form aluminium nitrate and hydrogen gas is released.
Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid.
This statement is correct. When aluminium is dipped in nitric acid, the reaction occurs at a slow rate. This is because a thin layer of aluminium oxide (Al2O3) is formed on the surface of aluminium, which acts as a protective layer and hinders further reaction between aluminium and nitric acid. This layer prevents the acid from coming into direct contact with the underlying aluminium metal, thus reducing the reactivity of aluminium.
Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.
This statement is incorrect. When aluminium reacts with nitric acid, aluminium nitrate (Al(NO3)3) is formed, but it does not form a protective layer. Instead, the aluminium nitrate dissolves in the nitric acid, forming a homogeneous solution. The formation of aluminium nitrate does not contribute to the formation of any protective layer on the surface of aluminium.
Therefore, Statement I is correct as the reactivity of aluminium decreases when it is dipped in nitric acid due to the formation of a protective layer of aluminium oxide. However, Statement II is incorrect as no protective layer of aluminium nitrate is formed during this reaction.
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Statement I: Reactivity of aluminium decreases when it is dipped in ni...
Correct answer is c
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Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer?
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Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer?.
Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer?.
Solutions for Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Statement I: Reactivity of aluminium decreases when it is dipped in nitric acid. Statement II: A protective layer of aluminium nitrate is formed when aluminium is dipped in nitric acid.a)I is correct, but II is incorrectb)I is incorrect, but II is correctc)Both the statements are correct, and II is also the correct explanation of Id)Both the statements are correct, but II is not the correct explanation of ICorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 10 tests.
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