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Assertion : Ammonia solution is an alkali.
Reason : Ammonia solution turns blue litmus paper red.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- 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)Assertion (A) is false but reason (R) is true.
- e)Both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
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Assertion : Ammonia solution is an alkali.Reason : Ammonia solution t...
Ammonia gas, which is alkaline, turn the red litmus paper blue.
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Assertion : Ammonia solution is an alkali.Reason : Ammonia solution t...
Assertion: Ammonia solution is an alkali.
Reason: Ammonia solution turns blue litmus paper red.
The correct answer is option 'C' - Assertion (A) is true but reason (R) is false.
Explanation:
Assertion: Ammonia solution is an alkali.
Reason: Ammonia solution turns blue litmus paper red.
To evaluate the given assertion and reason, let's understand the definitions of alkali and litmus paper.
Alkali:
An alkali is a type of chemical compound that is soluble in water and produces hydroxide ions (OH-) when dissolved. Alkalis are also known as bases. Examples of alkalis include sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2).
Litmus Paper:
Litmus paper is a pH indicator used to determine whether a substance is acidic, basic, or neutral. It comes in two colors: blue and red. Blue litmus paper turns red in the presence of an acid and remains blue in the presence of a base/alkali.
Explanation of Assertion:
The assertion states that ammonia solution is an alkali. However, this is incorrect.
Ammonia solution (NH3) is a weak base, not an alkali. It does not produce hydroxide ions (OH-) when dissolved in water. Instead, it accepts a proton (H+) from water to form ammonium ions (NH4+) and hydroxide ions (OH-). The reaction can be represented as:
NH3 + H2O → NH4+ + OH-
Explanation of Reason:
The reason given is that ammonia solution turns blue litmus paper red. This is true.
When ammonia solution comes into contact with blue litmus paper, it turns the blue litmus paper red. This color change occurs because ammonia solution is a weak base and can react with water to produce hydroxide ions (OH-). These hydroxide ions react with the blue litmus paper, which is an indicator of acidity, and turn it red.
However, it is important to note that the fact that ammonia solution turns blue litmus paper red does not mean that ammonia solution is an alkali. It is a weak base, but not a strong alkali like sodium hydroxide or potassium hydroxide.
Conclusion:
In conclusion, the given assertion is incorrect, and the reason provided is true but does not correctly explain the assertion. Ammonia solution is a weak base, not an alkali, and it turns blue litmus paper red due to the presence of hydroxide ions produced when it reacts with water.
Reason: Ammonia solution turns blue litmus paper red.
The correct answer is option 'C' - Assertion (A) is true but reason (R) is false.
Explanation:
Assertion: Ammonia solution is an alkali.
Reason: Ammonia solution turns blue litmus paper red.
To evaluate the given assertion and reason, let's understand the definitions of alkali and litmus paper.
Alkali:
An alkali is a type of chemical compound that is soluble in water and produces hydroxide ions (OH-) when dissolved. Alkalis are also known as bases. Examples of alkalis include sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2).
Litmus Paper:
Litmus paper is a pH indicator used to determine whether a substance is acidic, basic, or neutral. It comes in two colors: blue and red. Blue litmus paper turns red in the presence of an acid and remains blue in the presence of a base/alkali.
Explanation of Assertion:
The assertion states that ammonia solution is an alkali. However, this is incorrect.
Ammonia solution (NH3) is a weak base, not an alkali. It does not produce hydroxide ions (OH-) when dissolved in water. Instead, it accepts a proton (H+) from water to form ammonium ions (NH4+) and hydroxide ions (OH-). The reaction can be represented as:
NH3 + H2O → NH4+ + OH-
Explanation of Reason:
The reason given is that ammonia solution turns blue litmus paper red. This is true.
When ammonia solution comes into contact with blue litmus paper, it turns the blue litmus paper red. This color change occurs because ammonia solution is a weak base and can react with water to produce hydroxide ions (OH-). These hydroxide ions react with the blue litmus paper, which is an indicator of acidity, and turn it red.
However, it is important to note that the fact that ammonia solution turns blue litmus paper red does not mean that ammonia solution is an alkali. It is a weak base, but not a strong alkali like sodium hydroxide or potassium hydroxide.
Conclusion:
In conclusion, the given assertion is incorrect, and the reason provided is true but does not correctly explain the assertion. Ammonia solution is a weak base, not an alkali, and it turns blue litmus paper red due to the presence of hydroxide ions produced when it reacts with water.
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Assertion : Ammonia solution is an alkali.Reason : Ammonia solution turns blue litmus paper red.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).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)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?
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Assertion : Ammonia solution is an alkali.Reason : Ammonia solution turns blue litmus paper red.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).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)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. 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 Assertion : Ammonia solution is an alkali.Reason : Ammonia solution turns blue litmus paper red.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).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)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. 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 Assertion : Ammonia solution is an alkali.Reason : Ammonia solution turns blue litmus paper red.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).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)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?.
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Solutions for Assertion : Ammonia solution is an alkali.Reason : Ammonia solution turns blue litmus paper red.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).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)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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