12th class (Fsc) Chemistry unit 13 MCQs
chapter 13 MCQs 12th Class Chemistry
Carboxylic Acids:
1. The irritation cause by an ant bite is due to:
a. Acetic acid
b. Propionic acid
c. Butyrixc acid
d. Formic acid
2. Which one of the following is oxidize by strong as well as oxidizing agents:
a. Ethanol
b. 2-propanol
c. Benzyl alcohol
d. 1-butanol
3. Formic acid was first isolated by the distillation of:
a. Black ants
b. Red ants
c. Brown ants
d. None of these
4. The common name of methanic acid is:
a. Propionic acid
b. Formic acid
c. Butanoic acid
d. Acetic acid
5. The common name of ethanoic acid is:
a. Propionic acid
b. Formic acid
c. Butanoic acid
d. Acetic acid
6. The common name of propanic acid is:
a. Propionic acid
b. Formic acid
c. Butyric acid
d. Acetic acid
7. The common name of butanoic acid is:
a. Propionic acid
b. Formic acid
c. Butyric acid
d. Aceric acid
8. The formula of malonic acid is:
a. H2C(COOH)2
b. CH3COOH
c. HCOOH
d. H2C(COOH)2
9. Phthalic acid has formula:
a. C6H4(COOH)2
b. CH2COOH
c. C6H5COOH
d. H2C(COOH)2
10. Phthalic acid is:
a. Tricarbocylic acid
b. Monocarboxylic acid
c. None of these
d. Dicarboxylic acid
11. Which compound is polyprotic acid?
a. (COOH)2
b. CH3COOH
c. C6H5OH
d. C6H4(OH)COOH
12. 2-hydroxy propanoic acid is called.
a. Citric acid
b. Oxalic acid
c. Aspartic acid
d. Lactic acid
13. Acetic acid was first isolated from:
a. Milk
b. Butter
c. Red ant
d. Vinegar
14. Sufflx used in the meaning of carboxylic acid is:
a. -ane
b. -ene
c. -Oie
d. -al
15. By which chemical process carboxylic acids are obtained from fats and oils?
a. Carboxylation
b. Oxidation
c. Decarboxylation
d. Hydrolysis
16. By which chemical process alky nitriles can be converted into carboxylic acid?
a. Hydrolysis
b. Oxidation
c. Deamination
d. Hydration
17. The boiling point of formic acid is:
a. 394K
b. 373K
c. 300K
d. 280K
18. The boiling point of CH3 COOH is:
a. 491K
b. 391K
c. 591K
d. 291K
19. The molecular mass determination in non-polar solvent like benzene shows that carbocylic acids exist as:
a. Cyclic dimers
b. Cyclic trimers
c. Cyclic pentamers
d. Cyclic tetramers
20. Butanoic acid, pentanoic acid and hexanoic acid are:
a. Colorless liquids with unpleasant smell
b. Colorless liquids with pungent smell
c. Colorless solids with pungent smell
d. Colorless solids with pleasant smell
21. The boiling point of propionic acid is:
a. 524K
b. 424K
c. 624K
d. 324K
22. The melting point of buryric acid is:
a. -4oC
b. -2oC
c. -8oC
d. -6oC
23. The melting point of propionic acid is:
a. 251K
b. 351K
c. 551K
d. 451K
24. In which of the following compounds, hydrogen bonding is not possible?
a. CH3CH2OH
b. CH3OCH3
c. CH3COOH
d. H2O
25. Ester amylacetatelias the flavor of:
a. Orange
b. Raspberry
c. Banana
d. Apricot