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Q1. Which of the following statements is true regarding the boiling points of aldehydes and ketones? (2023)
Solution:
Ketones generally have higher boiling points than aldehydes due to stronger dipole-dipole interactions.
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Q2. Which of the following is a property of ketones? (2020)
Solution:
Ketones are generally less polar than aldehydes due to the absence of a hydrogen atom attached to the carbonyl carbon.
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Q3. What is the main product when an aldehyde is treated with sodium bisulfite? (2019)
Solution:
The main product formed when an aldehyde reacts with sodium bisulfite is a bisulfite adduct.
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Q4. Which of the following statements is true regarding aldehydes? (2023)
Solution:
Aldehydes are generally more reactive than ketones due to the presence of the hydrogen atom attached to the carbonyl carbon.
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Q5. Which of the following compounds can be oxidized to form a ketone? (2022)
Solution:
2-Propanol can be oxidized to form acetone, which is a ketone.
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Q6. What is the main product when propan-2-one is treated with sodium borohydride? (2023)
Solution:
Sodium borohydride reduces propan-2-one to propan-2-ol, which is a secondary alcohol.
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Q7. What is the general formula for aldehydes? (2023)
Solution:
The general formula for aldehydes is C_nH_(2n+1)CHO, where n is the number of carbon atoms.
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Q8. Which of the following is a property of aldehydes? (2023)
Solution:
Aldehydes are generally more reactive than ketones due to the presence of the hydrogen atom attached to the carbonyl carbon.
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Q9. Which of the following is the correct structure for propan-2-one? (2020)
Solution:
Propan-2-one, also known as acetone, has the structure CH3COCH3, indicating it is a ketone.
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Q10. Which of the following is a method for the preparation of aldehydes? (2019)
Solution:
Aldehydes can be prepared by the oxidation of primary alcohols.
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