Aldehydes, Ketones and Carboxylic Acids

CBSE Class 12 · Chemistry · 13 past questions

1. Q1 2026

   An organic compound (A) with molecular formula $C_3H_5N$ on reaction with $C_6H_5MgBr$ followed by…

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2. Q2 2025

   An aromatic compound 'A' with molecular formula C$_8$H$_8$O gives positive 2,4-DNP test. It gives yellow…

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3. Q3 2025

   Explain the following reactions and write chemical equation involved…

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4. Q4 2025

   The acid formed when propyl magnesium bromide is treated with $CO_2$ followed by acid hydrolysis is…

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5. Q5 2025

   Would you expect benzaldehyde to be more reactive or less reactive in nucleophilic addition reactions than…

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6. Q6 2024

   Write the reaction involved in the following…

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7. Q7 2024

   Acetic acid reacts with PCl$_5$ to give…

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8. Q8 2024

   The formation of cyanohydrin from an aldehyde is an example of…

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9. Q9 2024

   For Questions number 13 to 16, two statements are given — one labelled as Assertion (A) and the other…

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10. Q10 2024

    Write the chemical equation when…

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11. Q11 2024

    Compound (A) ($C_6H_{12}O_2$) on reduction with $LiAlH_4$ gives two compounds (B) and (C). The compound (B)…

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12. Q12 2023

    Which of the following is most reactive in nucleophilic addition reactions ?

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13. Q13 2023

    The reactivities of the carbonyl compounds HCHO (I), CH$_3$CHO (II) and CH$_3$COCH$_3$ (III) towards…

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