Aldehydes, Ketones and Carboxylic Acids

Bihar Board Class 12 · Chemistry · 42 past questions

1. Q1 2026 Set A

   Which of the following reagents reacts easily with both Acetaldehyde and Acetone?

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2. Q2 2026 Set A

   The IUPAC name of CH$_3$CH$_2$COCH$_2$CH$_3$ is

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3. Q3 2026 Set A

   With which of the following does Cannizzaro's reaction take place?

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4. Q4 2026 Set A

   Which of the following is tartaric acid? (with a figure)

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5. Q5 2026 Set A

   An organic compound on reaction with saturated solution of $\mathrm{NaHCO_3}$ gives effervescence. Then the…

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6. Q6 2025 Set D

   Which of the following is chloral ?

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7. Q7 2025 Set D

   Which of the following would give Aldol condensation reaction ?

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8. Q8 2025 Set D

   Vinegar contains

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9. Q9 2025 Set D

   The IUPAC name of $CH_3COOC_2H_5$ is

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10. Q10 2025 Set D

    The general formula of carbonyl compound is

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11. Q11 2025 Set D

    At room temperature, formaldehyde is

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12. Q12 2024 Set D2022 Set E

    By which of the following can formic acid and formaldehyde be distinguished ?

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13. Q13 2024 Set D

    With which of the following does acetic acid not form acetyl chloride ?

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14. Q14 2024 Set D

    The IUPAC name of $CH_3{-}CH(OH){-}CH_2{-}CHO$ is

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15. Q15 2024 Set D

    Formalin is the commercial name of

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16. Q16 2024 Set D

    An aldehyde on oxidation gives

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17. Q17 2024 Set D

    Chloretone is formed when chloroform reacts with

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18. Q18 2024 Set D

    The general molecular formula of saturated monocarboxylic acids is

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19. Q19 2023 Set F

    Which of the following is obtained when formic acid is heated with conc. $H_2SO_4$ ?

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20. Q20 2023 Set F

    The IUPAC name of $\mathrm{CH_3{-}CH(OH){-}COOH}$ is

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21. Q21 2023 Set F

    Which of the following is Tollen's reagent ?

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22. Q22 2023 Set F

    Which of the following gives Cannizzaro's reaction ?

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23. Q23 2022 Set E

    When acetylene is passed through dil. $H_2SO_4$ in the presence of $HgSO_4$, the compound formed is

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24. Q24 2022 Set E

    The reaction, $R-CO-Cl + H_2 \xrightarrow{Pd/BaSO_4} RCHO + HCl$ is called

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25. Q25 2022 Set E

    Which of the following does not give Aldol condensation ?

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26. Q26 2022 Set E

    When formaldehyde reacts with $NH_3$, then which of the following compounds is formed ?

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27. Q27 2022 Set E

    Which of the following is the functional group of an ester ?

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28. Q28 2022 Set E

    The reaction, RCOOAg + Br$_2$ $\xrightarrow{CCl_4}$ RBr + AgBr + CO$_2$ is called

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29. Q29 2021 Set A

    Which of the following undergoes aldol condensation reaction ?

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30. Q30 2021 Set A

    The product of the reaction $\mathrm{CH_3CN} \xrightarrow{\mathrm{H_3O^+}}$ is

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31. Q31 2021 Set A

    The name of acetone in IUPAC system is

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32. Q32 2021 Set A

    The hybridisation of carbon in carbonyl group ($-\overset{|}{C}=O$) is

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33. Q33 2021 Set A

    Formaldehyde on heating with NaOH solution gives

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34. Q34 2019 Set D

    IUPAC name of CH$_3$COOH is -

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35. Q35 2018

    The canizzaro's reaction is not given by-

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36. Q36 2018

    An organic compound gives iodoform test and also gives positive test with Tollens reagent. The compound is- (with a figure)

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37. Q37 2018

    $R-\overset{O}{\overset{\|}{C}}-X \xrightarrow[\Delta]{H_2, Pd/BaSO_4} R-\overset{O}{\overset{\|}{C}}-H + HX$…

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38. Q38 2018

    Which of the following compound is most reactive towards nucleophilic addition? (with a figure)

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39. Q39 2018

    Write the test by which following are distinguished…

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40. Q40 2017

    Carbon atom in the carbonyl group is –

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41. Q41 2017

    The reaction is called…

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42. Q42 2017

    Which of the following undergoes Cannizaro’s reaction ?

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