12th Class Chemistry Mcqs With Answers Chapter 13| 2nd Year chemistry mcqs with answers pdf
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12th Class Chemistry Mcqs With Answers Chapter 1 | 12th Class Chemistry Mcqs With Answers Chapter 2 |
12th Class Chemistry Mcqs With Answers Chapter 3 | 12th Class Chemistry Mcqs With Answers Chapter 4 |
12th Class Chemistry Mcqs With Answers Chapter 5 | 12th Class Chemistry Mcqs With Answers Chapter 6 |
12th Class Chemistry Mcqs With Answers Chapter 7 | 12th Class Chemistry Mcqs With Answers Chapter 8 |
12th Class Chemistry Mcqs With Answers Chapter 9 | 12th Class Chemistry Mcqs With Answers Chapter 10 |
12th Class Chemistry Mcqs With Answers Chapter 11 | 12th Class Chemistry Mcqs With Answers Chapter 12 |
12th Class Chemistry Mcqs With Answers Chapter 13 | 12th Class Chemistry Mcqs With Answers Chapter 14 |
12th Class Chemistry Mcqs With Answers Chapter 15 | 12th Class Chemistry Mcqs With Answers Chapter 16 |
12th Class Chemistry Mcqs With Answers Chapter 17 | 12th Class Chemistry Mcqs With Answers Chapter 18 |
12th Class Chemistry Mcqs With Answers Chapter 19 | 12th Class Chemistry Mcqs With Answers Chapter 20 |
Chapter No 13
Carboxylic Acid
1. Ninhydrin reacts with amino acid to form product which has colour choose which one is correct:
- Blue
- Violet
- Bluish violet
- Red
2. Slight oxidation of primary alcohol gives choose which one is correct:
- Ketone
- Organic acid
- Aldehyde
- An ester
3. Which of the following is the strongest acid choose which one is correct:
- HCOOH
- CH3COOH
- CH3 − CH2 − COOH
- Cl − CH2 − COOH
4. Which of the following esters shows the flavour of orange choose which one is correct:
- Benzyl acetate
- Iso-butyl formate
- Octyl acetate
- Ethyl butyrate
5. Which acid is used in the manufacture of synthetic fibre choose which one is correct:
- Formic acid
- Acetic acid
- Carbonic acid
- Benzoic acid
6. Some amino acids are most important because they are the final product of hydrolysis of peptide and protein and they are choose which one is correct:
- α-amino acid
- β-amino acid
- γ-amino acid
- All of the above
7. In amino acid proton is transferred from one point to the other point and this dipolar ion is called choose which one is correct:
- Oxonium ion
- Carbonium ion
- Zwitter ion
- Carbanion
8. Which of the following is neutral amino acid choose which one is correct:
- Glycine
- Histidine
- Lysine
- Aspartic acid
9. The amino acid which body can synthesize are called choose which one is correct:
- Essential
- Non-essential
- Acidic
- Basic
10. Amino acids are classified into following types choose which one is correct:
- Acidic
- Basic
- Neutral
- All
11. By convention a peptide having molecular mass upto 10,000 is called choose which one is correct:
- Peptide
- Polypeptide
- Protein
- Dipeptide
12. Acetic acid is manufactured commercially by choose which one is correct:
- Distillation
- Fermentation
- Ozonolysis
- Esterification
13. Which of the following derivative can’t be prepared directly from acetic acid choose which one is correct:
- Acetic anhydride
- Acetyl chloride
- Acetamide
- Ethyl ethanoate
14. Which reagent is used to reduce a carboxylic group to an alcohol choose which one is correct:
- H2/Ni
- HI/P
- NaBH4
- LiAlH4
15. The solution of which acid is used for seasoning of food choose which one is correct:
- Formic acid
- Acetic acid
- Benzoic acid
- Butanoic acid
16. Which one of the following element is not present in all proteins choose which one is correct:
- Carbon
- Hydrogen
- Nitrogen
- Sulphur
19. Which of the following will react with both ethanol and ethanoic acid at room temperature choose which one is correct:
- CaCO3
- CuO
- Na-metal
- CH3OH
20. Which one of the following is not an amino acid choose which one is correct:
- Alanine
- Glycine
- Aspartic acid
- Aniline
21. Which one of the following metal can evolve hydrogen from acetic acid choose which one is correct:
- Na
- Fe
- Al
- Cu
22. Which one of the following is not a dicarboxylic acid choose which one is correct:
- Malonic acid
- Valeric acid
- Maleic acid
- Succinic acid
24. Reverse of esterification is known as choose which one is correct:
- Trans esterification
- Dehydration
- Hydrolysis
- Decarboxylation
25. The general formula of monocarboxylic acid choose which one is correct:
- CnHnCOOH
- CnH2n+1COOH
- CnH2nCOOH
- CnH2n−2COOH
26. The simplest of all amino acid choose which one is correct:
- Lysine
- Glycine
- Alanine
- Aspartic acid
27. Carboxylic acid can be changed to acid chloride by the treatment with choose which one is correct:
- S2Cl2
- SOCl2
- HCl
- HOCl
28. Which product is not formed when acetic acid reacts with SOCl2 (Thionyl chloride) choose which one is correct:
- CH3Cl
- CH3COCl
- HCl
- SO2
29. Which one of the following reagent is used to convert acetic acid to ethane?
- LiAlH4
- HI and Red P
- P2O5
- SOCl2 and pyridine
30. The weakest carboxylic acid choose which one is correct:
- HCOOH
- CH3CH2COOH
- CH3COOH
- ClCH2COOH