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Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :
- a)No change in colour in both the litmus papers.
- b)Blue litmus paper becomes red.
- c)Red litmus paper becomes blue.
- d)Blue litmus paper turns black.
Correct answer is option 'B'. Can you explain this answer?
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Sulphur powder is heated on a spatula. A piece of both, moist blue and...
Sulphur upon heating in a spatula in presence of air forms,
SO2 being an acidic oxide when comes in contact with moist Blue litmus paper, turns the litmus paper red, due to the formation of sulphurous acid.
SO2 being an acidic oxide when comes in contact with moist Blue litmus paper, turns the litmus paper red, due to the formation of sulphurous acid.
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Sulphur powder is heated on a spatula. A piece of both, moist blue and...
Explanation:
When sulphur powder is heated on a spatula, it undergoes a chemical reaction and produces a gas. This gas is sulphur dioxide (SO2).
Action of the gas on moist litmus papers:
When the gas evolved during the heating of sulphur powder is brought near a moist blue litmus paper, it turns the blue litmus paper red. This indicates that the gas is acidic in nature.
When the gas evolved during the heating of sulphur powder is brought near a moist red litmus paper, there is no change in color. This indicates that the gas does not have any effect on the red litmus paper.
Explanation of the action:
- Blue litmus paper:
When the blue litmus paper comes in contact with an acidic substance, it turns red. This is because blue litmus paper is sensitive to acidity and undergoes a color change in the presence of an acidic substance.
In this case, the gas evolved during the heating of sulphur powder is sulphur dioxide (SO2), which is an acidic gas. When it comes in contact with the moist blue litmus paper, it reacts with the water on the paper and forms sulphurous acid (H2SO3). This change in pH turns the blue litmus paper red.
- Red litmus paper:
Red litmus paper is used to test for alkalinity. It undergoes a color change when it comes in contact with a basic substance. However, it does not undergo any change when it comes in contact with an acidic substance. In this case, the gas evolved during the heating of sulphur powder is acidic (sulphur dioxide), and hence, it does not react with the red litmus paper. Therefore, there is no change in the color of the red litmus paper.
Conclusion:
Based on the above observations, it can be concluded that when the gas evolved during the heating of sulphur powder is brought near a moist blue litmus paper, it turns the blue litmus paper red. However, there is no change in the color of the red litmus paper. Therefore, the correct answer is option 'B' - Blue litmus paper becomes red.
When sulphur powder is heated on a spatula, it undergoes a chemical reaction and produces a gas. This gas is sulphur dioxide (SO2).
Action of the gas on moist litmus papers:
When the gas evolved during the heating of sulphur powder is brought near a moist blue litmus paper, it turns the blue litmus paper red. This indicates that the gas is acidic in nature.
When the gas evolved during the heating of sulphur powder is brought near a moist red litmus paper, there is no change in color. This indicates that the gas does not have any effect on the red litmus paper.
Explanation of the action:
- Blue litmus paper:
When the blue litmus paper comes in contact with an acidic substance, it turns red. This is because blue litmus paper is sensitive to acidity and undergoes a color change in the presence of an acidic substance.
In this case, the gas evolved during the heating of sulphur powder is sulphur dioxide (SO2), which is an acidic gas. When it comes in contact with the moist blue litmus paper, it reacts with the water on the paper and forms sulphurous acid (H2SO3). This change in pH turns the blue litmus paper red.
- Red litmus paper:
Red litmus paper is used to test for alkalinity. It undergoes a color change when it comes in contact with a basic substance. However, it does not undergo any change when it comes in contact with an acidic substance. In this case, the gas evolved during the heating of sulphur powder is acidic (sulphur dioxide), and hence, it does not react with the red litmus paper. Therefore, there is no change in the color of the red litmus paper.
Conclusion:
Based on the above observations, it can be concluded that when the gas evolved during the heating of sulphur powder is brought near a moist blue litmus paper, it turns the blue litmus paper red. However, there is no change in the color of the red litmus paper. Therefore, the correct answer is option 'B' - Blue litmus paper becomes red.
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Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. Can you explain this answer?
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Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. 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 Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. 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 Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. Can you explain this answer?.
Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. 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 Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. 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 Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Sulphur powder is heated on a spatula. A piece of both, moist blue and red litmus papers are brought one by one near the gas evolved during heating. The action of gas on the moist litmus papers will be :a)No change in colour in both the litmus papers.b)Blue litmus paper becomes red.c)Red litmus paper becomes blue.d)Blue litmus paper turns black.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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