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Which of the following statements are true?
(A) Sucrose is a non-reducing sugar.
(B) Glucose is oxidised by bromine water.
(C) Glucose rotates plane polarised light in the clockwise direction.
(D) Fructose is oxidised by bromine water.
  • a)
    (A), (B) and (C)
  • b)
    (A) and (B)
  • c)
    (B) and (C)
  • d)
    (A) and (D)
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements are true?(A) Sucrose is a non-reduc...
Analysis of Statements
To determine the truth of the statements regarding saccharides, we need to evaluate each one carefully.
(A) Sucrose is a non-reducing sugar.
- True: Sucrose, composed of glucose and fructose, does not have a free aldehyde or ketone group. As a result, it cannot reduce other compounds, classifying it as a non-reducing sugar.
(B) Glucose is oxidised by bromine water.
- True: Glucose, being an aldose, can be oxidized. Bromine water, which is a mild oxidizing agent, oxidizes glucose, resulting in the formation of gluconic acid.
(C) Glucose rotates plane polarised light in the clockwise direction.
- True: Glucose has a specific rotation of +52.7 degrees, indicating that it rotates plane-polarized light in a clockwise direction (dextrorotatory).
(D) Fructose is oxidised by bromine water.
- False: Fructose, a ketose, does not undergo oxidation by bromine water under normal conditions. While it can be oxidized using stronger oxidizing agents, bromine water does not affect it.
Conclusion
Given the evaluations:
- Statements (A), (B), and (C) are true.
- Statement (D) is false.
Thus, the correct answer is (A): Sucrose is a non-reducing sugar, and all statements in this category are true.
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Which of the following statements are true?(A) Sucrose is a non-reducing sugar.(B) Glucose is oxidised by bromine water.(C) Glucose rotates plane polarised light in the clockwise direction.(D) Fructose is oxidised by bromine water.a)(A), (B) and (C)b)(A) and (B)c)(B) and (C)d)(A) and (D)Correct answer is option 'A'. Can you explain this answer?
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