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Which of the following will be observed if an apple slice is left exposed to air?
- a)It under goes oxidation and become brown in colour
- b)Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and enzymes
- c)Both the above are correct
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following will be observed if an apple slice is left expo...
Both the above are correct
This question is part of UPSC exam. View all Class 7 courses
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Which of the following will be observed if an apple slice is left expo...
Observations when an apple slice is left exposed to air:
When an apple slice is left exposed to air, the following observations can be made:
Oxidation and browning of the apple slice:
- The apple slice undergoes oxidation when it is exposed to air.
- This oxidation reaction is catalyzed by enzymes present in the apple.
- The enzymes in the apple slice react with the oxygen in the air, causing a chemical reaction.
- This chemical reaction leads to the formation of a brown pigment known as melanin.
- The melanin pigment is responsible for the brown coloration observed on the surface of the apple slice.
- The browning of the apple slice is a natural process and is commonly observed in fruits and vegetables when they are cut or bruised.
Explanation for the options:
a) It undergoes oxidation and becomes brown in color:
This option is correct because the exposure of the apple slice to air leads to oxidation, resulting in the browning of the apple slice. The brown coloration is caused by the formation of melanin pigment.
b) Appearance of brown color on the surface of the apple slice is caused by a chemical reaction between air and enzymes:
This option is also correct because the browning of the apple slice is a result of a chemical reaction between the enzymes present in the apple and the oxygen in the air. This reaction leads to the formation of the brown pigment melanin.
c) Both the above are correct:
This option is correct as it acknowledges that both the observations mentioned in options a and b are correct. The apple slice undergoes oxidation and becomes brown in color, and this color change is caused by a chemical reaction between air and enzymes.
d) None of these:
This option is incorrect as both options a and b are correct, and therefore, option c is the correct answer.
Overall, when an apple slice is left exposed to air, it undergoes oxidation and becomes brown in color. This browning is caused by a chemical reaction between the enzymes present in the apple and the oxygen in the air.
When an apple slice is left exposed to air, the following observations can be made:
Oxidation and browning of the apple slice:
- The apple slice undergoes oxidation when it is exposed to air.
- This oxidation reaction is catalyzed by enzymes present in the apple.
- The enzymes in the apple slice react with the oxygen in the air, causing a chemical reaction.
- This chemical reaction leads to the formation of a brown pigment known as melanin.
- The melanin pigment is responsible for the brown coloration observed on the surface of the apple slice.
- The browning of the apple slice is a natural process and is commonly observed in fruits and vegetables when they are cut or bruised.
Explanation for the options:
a) It undergoes oxidation and becomes brown in color:
This option is correct because the exposure of the apple slice to air leads to oxidation, resulting in the browning of the apple slice. The brown coloration is caused by the formation of melanin pigment.
b) Appearance of brown color on the surface of the apple slice is caused by a chemical reaction between air and enzymes:
This option is also correct because the browning of the apple slice is a result of a chemical reaction between the enzymes present in the apple and the oxygen in the air. This reaction leads to the formation of the brown pigment melanin.
c) Both the above are correct:
This option is correct as it acknowledges that both the observations mentioned in options a and b are correct. The apple slice undergoes oxidation and becomes brown in color, and this color change is caused by a chemical reaction between air and enzymes.
d) None of these:
This option is incorrect as both options a and b are correct, and therefore, option c is the correct answer.
Overall, when an apple slice is left exposed to air, it undergoes oxidation and becomes brown in color. This browning is caused by a chemical reaction between the enzymes present in the apple and the oxygen in the air.
Community Answer
Which of the following will be observed if an apple slice is left expo...
Answer is 'C'
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Which of the following will be observed if an apple slice is left exposed to air?a)It under goes oxidation and become brown in colourb)Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and enzymesc)Both the above are correctd)None of theseCorrect answer is option 'C'. Can you explain this answer?
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Which of the following will be observed if an apple slice is left exposed to air?a)It under goes oxidation and become brown in colourb)Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and enzymesc)Both the above are correctd)None of theseCorrect answer is option 'C'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Which of the following will be observed if an apple slice is left exposed to air?a)It under goes oxidation and become brown in colourb)Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and enzymesc)Both the above are correctd)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following will be observed if an apple slice is left exposed to air?a)It under goes oxidation and become brown in colourb)Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and enzymesc)Both the above are correctd)None of theseCorrect answer is option 'C'. Can you explain this answer?.
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Which of the following will be observed if an apple slice is left exposed to air?a)It under goes oxidation and become brown in colourb)Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and enzymesc)Both the above are correctd)None of theseCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following will be observed if an apple slice is left exposed to air?a)It under goes oxidation and become brown in colourb)Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and enzymesc)Both the above are correctd)None of theseCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following will be observed if an apple slice is left exposed to air?a)It under goes oxidation and become brown in colourb)Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and enzymesc)Both the above are correctd)None of theseCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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