Unfortunately, Mr. M. Subramanian, who maintained this website lost his battle to cancer and passed away in July, 2019. The database has over 50,000 questions. If you are interested in purchasing the website/database, please reach out using the form here.
Khub.info Learn TNPSC exam and online pratice
Q1. .......acid reduces Tollen's reagent.
Correct answer : 1
Q2. What can be obtained by heating a mixture of sodium acetate and soda lime?
Correct answer : 3
Q3. Which is the weakest acid of the following?
Correct answer : 1
Q4. Roschelle salt is employed in the preparation of Fehlling's solution. The salt is......
Correct answer : 1
Q5. ………………….is used as hypnotic substance.
Correct answer : 2
Q6. Example of aromatic unsaturated keto acid is…..
Correct answer : 3
Q7. ………………..used in the preparation of medicine sulphonal.
Correct answer : 3
Q8. …………………is used to prepare tincture benzoin medicine for throat infection.
Correct answer : 3
Q9. 2-pentene on ozonolysis followed by reductive cleavage produce……
Correct answer : 1
Q10. Consider the following: (1) Carbon dioxide (2) Oxides of nitrogen (3) Oxides of sulphur. Which of the above is/are the emission/s from coal combustion at thermal power plants?
Correct answer : 4
Q11. What is the final product when 2-butene is ionised?
Correct answer : 1
Q12. …………………..exhibit functional isomerism.
Correct answer : 2
Q13. The IUPAC name of cinnamaldehyde is.......
Correct answer : 2
Q14. The oxidation state of carbon in aldehyde is........
Correct answer : 1
Q15. What can be obtained by heating benzophenone with solid KOH?
Correct answer : 4
Q16. ………………is obtained when acetophenone reacts with chlorine.
Correct answer : 3
Q17. Of the following statements which one is true about acetaldehyde?
Correct answer : 2
Q18. Benzaldehyde undergoes……….reaction
Correct answer : 1
Q19. Benzaldehyde is converted into…………….by Perkin's reaction.
Correct answer : 3
Q20. Paraldehyde is used as………
Correct answer : 2
Q21. Pick the one from the following that does not undergo iodoform reaction?
Correct answer : 2
Q22. Of the following which one undergoes Cannizaro reaction?
Correct answer : 4
Q23. Aldehydes restore the original pink colour of which of the following?
Correct answer : 2
Q24. Pick the one that gives oxime with hydroxyl amine?
Correct answer : 3
Q25. Reaction of which of the following with Grignard reagent gives primary alcohol?
Correct answer : 2
Q26. Identify the one that is used as an urinary antiseptic?
Correct answer : 1
Q27. What product is obtained when benzaldehyde reacts with ammonia?
Correct answer : 3
Q28. Reaction of acetaldehyde with...... forms Aldimine.
Correct answer : 3
Q29. What is the produce obtained by the reaction of formaldehyde with ammonia?
Correct answer : 2
Q30. What is the final product obtained when acetaldehyde react with HCN followed by hydrolysis?
Correct answer : 1
Q31. From among the following what is formed when Calcium Formate alone is distilled?
Correct answer : 1
Q32. What is the IUPAC name of benzaldehyde?
Correct answer : 4
Q33. Of the following, which one is not a Carbonyl compound?
Correct answer : 2
Q34. What is Benzhydrol?
Correct answer : 3
Q35. ........ Used to prepare aldehydes by Stephen's reaction.
Correct answer : 1
Q36. To prepare ethyol methyl ketone, which of the following is oxidised?
Correct answer : 3
Q37. Find the pair, reaction of which produces Bakelite?
Correct answer : 3
Q38. Pick the wrong statement from the following?
Correct answer : 2
Q39. Among the following which one is Aldol?
Correct answer : 2
Q40. Which of the following compound does not undergo cannizaro reaction?
Correct answer : 1
Q41. Tollen's reagent is......
Correct answer : 2
Q42. Polymerisation of Formaldehyde gives us which of the following?
Correct answer : 3
Q43. Methyl ketones are usually characterised by which of the following?