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Class 12 Chemistry Practice Test: Carboxylic Acids Chemical Reactions
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Avg score: 88% • Most missed: “If the pKa value of acetic acid is 4.76, predict the pKa value of HCl.”
Class 12 Chemistry Practice Test: Carboxylic Acids Chemical Reactions
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25 Questions

1. Benzoic acid undergoes Friedel-Crafts alkylation to form o- and p-Toluic acid.
2. Benzoic acid reacts with ______ to give ammonium benzoate salt, which on further dehydration gives benzamide.
3. The conversion of phthalamide to phthalimide is brought about by the loss of ______ molecule.
4. Which of the following is used to shift the esterification reaction of carboxylic acids towards the right?
5. Identify X in the following reaction.
The X in the Hell-Volhard-Zelinsky reaction is Br2-red Pand H2O
6. Ammonium acetate on removal of ______ forms acetamide.
7. Benzoic acid reacts with ______ to give m-Bromobenzoic acid.
8. Other than ethanoyl chloride, what are the by-products formed when ethanoic acid reacts with PCl3?
9. Benzoic acid reacts with phosphorus pentaoxide in the presence of heat to give ________
10. The reaction of carboxylic acids with NaHCO3 produces ______ which helps it to differentiate it from phenols.
11. Which of the following is the most acidic?
12. Acetic acid behaves exactly like ethanol on reaction with thionyl chloride.
13. The presence of CF3 group in an acid gives a higher acidic strength compared to the presence of NO2.
14. Esterification of carboxylic acids is a/an __________ reaction.
15. If the pKa value of acetic acid is 4.76, predict the pKa value of HCl.
16. Which of the following is the stronger acid?
17. Which is the most preferred reagent in the product of acetyl chloride from acetic acid?
18. Benzoic acid reacts with phosphorus pentachloride to give ________
19. Which of the following carboxylic acids is most reactive towards esterification with given alcohol?
20. Which of the following acids on Kolbe’s electrolysis gives ethane?
21. What is the correct order of pKa values of the following acids?
22. What is the correct order of acidity of the following?
23. The pKa value is equivalent to ________
24. How many molecules of acetic acid react with H2SO4 on heating to give one molecule of acetic anhydride?
25. What is the relation between the acidic strength of A and B?
The relation between acidic strength of A & B is A lt B & stabilise the carboxylate ion

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