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Unit#11: Carboxylic Compounds

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Question 1 of 20 0% read

1. Which catalyst is commonly used in esterification?

A NaOH
B H2SO4
C NH3
D HCl

2. Which is the simplest carboxylic acid?

A Ethanoic acid
B Methanoic acid
C Propanoic acid
D Butanoic acid

3. Carboxylic acids turn blue litmus:

A Red
B Green
C Yellow
D No change

4. Ethanoic acid is used in everyday life as:

A Soap
B Vinegar
C Detergent
D Perfume

5. Which product is common in reactions of carboxylic acids with bases?

A Hydrogen
B Salt
C Ester
D Carbon dioxide

6. Ethanoic acid can be prepared by oxidation of:

A Methanol
B Ethanol
C Propanol
D Butanol

7. Which functional group is responsible for acidity in carboxylic acids?

A –OH
B –CO
C –COOH
D –CHO

8. Everyday use of esters includes:

A Cooking fuel
B Flavoring agents
C Bleaching
D Rust prevention

9. Esters are formed by reaction between carboxylic acid and:

A Alkane
B Alkene
C Alcohol
D Aldehyde

10. Which property makes esters suitable for perfumes?

A High acidity
B Pleasant smell
C High reactivity
D Strong basicity

11. Which acid is widely used in food preservation?

A Methanoic acid
B Ethanoic acid
C Sulphuric acid
D Nitric acid

12. Carboxylic acids react with carbonates to produce:

A Salt only
B Salt, water and CO2
C Salt and hydrogen
D Ester and CO2

13. Carboxylic acids react with bases to form:

A Alcohols
B Esters
C Salts and water
D Ketones

14. Which compound has sour taste?

A Ester
B Alcohol
C Carboxylic acid
D Ether

15. Why are carboxylic acids acidic in nature?

A Due to presence of –OH group only
B Due to release of H+ from –COOH group
C Due to presence of carbonyl group
D Due to high molecular mass

16. Reaction of carboxylic acids with metals produces:

A Salt and oxygen
B Salt and hydrogen gas
C Alcohol and hydrogen
D Ester and water

17. Reaction of ethanoic acid with sodium hydroxide gives:

A Sodium ethanoate and water
B Sodium ethanol and water
C Ethanol and sodium
D Ethane and water

18. Industrial use of ethanoic acid includes manufacture of:

A Plastics
B Glass
C Steel
D Cement

19. Esters are generally insoluble in:

A Water
B Alcohol
C Ether
D Organic solvents

20. Which reaction involves OH group of carboxylic acid?

A Reaction with metals
B Reaction with bases
C Esterification
D Reaction with carbonates

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