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Chemistry - Aldehydes and Ketones

Practise 23 BITSAT previous year questions on Aldehydes and Ketones, compiled from papers spanning 2009 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty BITSAT tests.

Aldehydes and Ketones has been asked in 12 of the 16 years of BITSAT papers analysed (2009–2024), with 23 questions in all. 43% of them were easy, 52% moderate and 4% tough. Most of its questions came from 2020, with 5 questions that year. In the last three years (2022–2024) it had 3 questions across 3 papers, about 1 per paper.

The chapter's 5 topics are not weighted equally: Chemical reactions for aldehydes and ketones (10 questions, 43%), Tests for aldehyde and ketones (5 questions, 22%), and Method of preparation for both aldehydes and ketones (4 questions, 17%) have been asked the most. Chemical reactions for aldehydes and ketones has also led over the last five years, with 4 questions. Tests for aldehyde and ketones has produced the most tough questions (1).

  1. 1An alkene on ozonolysis gives a mixture of Propan-2-one and methanal. What is X ?2024 (Memory Based Paper 2)Method of preparation for both aldehydes and ketones
  2. 2Which of the following compounds will undergo self aldol condensation in the presence of cold dilute alkali?2024 (Memory Based Paper 3)Chemical reactions for aldehydes and ketones
  3. 3The reaction2023 (Memory Based Paper 2)Method of preparation for Aldehydes
  4. 4Fructose reduces Tollen's reagent due to:2021Tests for aldehyde and ketones
  5. 5What is in the following conversion?2020Method of preparation for both aldehydes and ketones
  6. 6The alcohol product(s) of the reduction of 2 -methyl-3-pentanone with is (are)2020Chemical reactions for aldehydes and ketones
  7. 7The following change can be carried out with2020Chemical reactions for aldehydes and ketones
  8. 8What is the product of the following reaction?2020Chemical reactions for aldehydes and ketones
  9. 9Product (D) in above reaction is:2020Method of preparation for both aldehydes and ketones
  10. 10For the reaction- rate of reaction is faster, when Z is-2019Chemical reactions for aldehydes and ketones
  11. 11An unsaturated hydrocarbon X gives white precipitate with Tollen s reagent. If X is gaseous in nature, the molecular formula of X is2018Reactions for aldehydes
  12. 12The most likely acid-catalysed aldol condensation products of each of the two aldehydes I and II will respectively be2016Chemical reactions for aldehydes and ketones
  13. 13What will happen when D-(+)-glucose is treated with methanolic - HCl followed by Tollens' reagent?2016Tests for aldehyde and ketones
  14. 14Nucleophilic addition reaction will be most favoured in2013Chemical reactions for aldehydes and ketones
  15. 15Which of the following is process used for the preparation of acetone?2012Method of preparation for both aldehydes and ketones
  16. 16The preparation of ethyl acetoacetate involves:2012Chemical reactions for aldehydes and ketones
  17. 17Which one of the following pairs is not correctly matched?2012Chemical reactions for aldehydes and ketones
  18. 18Which of the following esters cannot undergo Claisen self condensation?2011Chemical reactions for aldehydes and ketones
  19. 19The reagent (s) which can be used to distinguish acetophenone from benzophenone is (are)2011Tests for aldehyde and ketones
  20. 20Acetaldehyde and acetone can be distinguished by :2011Reactions for aldehydes
  21. 21Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?2010Tests for aldehyde and ketones
  22. 22Formic acid and acetic acid can be distinguished by:2010Reactions for aldehydes
  23. 23Which of the following compound can not be used in preparation of iodoform?2009Tests for aldehyde and ketones

Frequently Asked Questions

1.How many questions are available for Aldehydes and Ketones?

This chapter includes 23 questions compiled from BITSAT papers spanning 2009 to 2024.

2.Are these questions only from BITSAT, or from other exams too?

These are BITSAT questions specifically for the Aldehydes and Ketones chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Aldehydes and Ketones an important chapter for BITSAT Chemistry?

Aldehydes and Ketones has appeared in 12 of the 16 years of BITSAT papers covered here, with 23 questions across 13 papers - about 2 per paper it appears in.

4.What is the difficulty level of Aldehydes and Ketones questions in BITSAT?

Of the 23 questions analysed for this chapter, 43% are easy, 52% moderate and 4% tough. 2020 had the most, with 5 questions.

5.Which topics in Aldehydes and Ketones should I focus on?

These topics have carried the most weightage in Aldehydes and Ketones:

  • Chemical reactions for aldehydes and ketones - 10 questions (43%)
  • Tests for aldehyde and ketones - 5 questions (22%)
  • Method of preparation for both aldehydes and ketones - 4 questions (17%)
  • Tests for aldehyde and ketones has produced the most tough questions (1).
6.Is Aldehydes and Ketones's weightage in BITSAT going up or down?

Across all 13 papers analysed, Aldehydes and Ketones has averaged about 1.8 questions per paper. In the last three years (2022–2024), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.