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. What is the percentage of ethanol in absolute pure alcohol?
Correct answer : 4
Q2. Which organic acid is found in vinegar?
Correct answer : 4
Q3. When acetone is reduced with zinc amalgam and HCl, the resultant product is.......
Correct answer : 1
Q4. What reaction take place when carboxylic acid is heated with sodalime?
Correct answer : 4
Q5. Which of the following carboxylic acid is found in the red ant's sting?
Correct answer : 2
Q6. Glacial acetic acid contains……acetic acid
Correct answer : 1
Q7. By which process industrial ethanol is prepared?
Correct answer : 3
Q8. Of the following, which one is liberates hydrogen on reaction with sodium?
Correct answer : 3
Q9. Formalin is an aqueous solution of .........
Correct answer : 3
Q10. Vinegar is a dilute solution of ...
Correct answer : 4
Q11. Of the following compounds, which one does not contain carbonyl group?
Correct answer : 1
Q12. The enzyme which converts glucose and fructose into alcohol is .....
Correct answer : 2
Q13. The sodium salt of a long chained carboxylic acid possessing cleansing action is called a/an
Correct answer : 2
Q14. Detergents are……….
Correct answer : 1
Q15. The alkaline hydrolysis of oil and fats is commonly called as ………………
Correct answer : 3
Q16. Potassium salt of fatty acid is called…….
Correct answer : 1
Q17. Sodium salt of fatty acid is called……
Correct answer : 1
Q18. Of the following which one is used to coagulate rubber from latex?
Correct answer : 2
Q19. Of the following which one is used in the process of manufacturing of artificial fibre rayon?
Correct answer : 2
Q20. Of the following which one is used as a preservative in pickles and sauces?
Correct answer : 1
Q21. What product is formed when ethyl alcohol reacts with acetic acid?
Correct answer : 4
Q22. What is the derived product when sodium acetate is heated with soda lime?
Correct answer : 2
Q23. Acetic acid at 290K is known as…..
Correct answer : 1
Q24. Which of the following is an example of dicarboxylic acid?
Correct answer : 3
Q25. The functional group of carboxylic acids is........
Correct answer : 2
Q26. Of the following which one is used as a solvent and also to clean and dry the precious equipments?
Correct answer : 2
Q27. The dehydrogenation of isopropyl alcohol using heated copper gives………
Correct answer : 1
Q28. The IUPAC name of acetone is ...
Correct answer : 3
Q29. Of the following which one is used as a medicine in urinary ailments?
Correct answer : 1
Q30. When formaldehyde condenses with phenol the resultant product is……….
Correct answer : 2
Q31. Of the following which one is used to preserve biological specimens?
Correct answer : 3
Q32. The produce derived from the action of ammonia with formaldehyde is ....
Correct answer : 4
Q33. An aqueous solution of formaldehyde containing 40% HCHO is known as ..
Correct answer : 1
Q34. When ethanol reacts with copper at 573K, the produce will be…..