11. The name of the salt formed in the reaction between magnesium and butanoic acid is ….
  • A.   magnesium butanoate
  • B.   magnesium butanate
  • C.   magnesium butanide
  • D.   magnesium butanoic

12. The equation for the reaction between methanoic acid and sodium is ….

  • A.  HCOOH + Na  → HCOONa + H2
  • B.  2HCOOH + 2Na  → 2HCOONa + H2
  • C.  CH3COOH + Na → CH3COONa + H2
  • D.  2CH3COOH + 2Na  → 2CH3COONa + H2

Q13-15: Esters are volatile compounds with distinctive smells and can be used in perfumes.

perfume bottles

13. The functional group of an ester is …

  • A.   -OH
  • B.   –CHO
  • C.   –COO-
  • D.   -COOH

14. The formulas of 2 compounds X and Y are:

Compound X: CH3CH2OH 

Compound Y:  CH3CH2CH2COOH

  

Compounds X and Y react together to produce the ester …

  • A.   ethyl propanoate
  • B.   butyl ethanoate
  • C.   ethyl butanoate
  • D.   propyl ethanoate
15. The formula of an ester found in some fruits is shown below:

fruit ester

  

The names of the carboxylic acid and alcohol which reacted together to produce this ester are …

  • A.   propanoic acid and butanol
  • B.   butanoic acid and propanol
  • C.   pentanoic acid and ethanol
  • D.   ethanoic acid and butanol
16. Polyesters, such as terylene, are condensation polymers produced for use in the garment industry.

A section of a polyester chain is shown below:

The two monomers used to form this polyester are:

 polyester scarves
polyester monomers x 4
17. The molecule shown here is obtained from corn starch and can be used to make a biodegradable polymer, PLA.
What functional groups does this molecule contain?
  • A.   alcohol and ester
  • B.   alcohol and carboxylic acid
  • C.   alcohol, carboxylic acid and ester
  • D.   carboxylic acid and ester

18. Crude oil can be converted to ethanoic acid as shown in the following flow chart:

Crude oil  → kerosene  → ethene  → ethanol  → ethanoic acid

The four processes used are:

  1. Cracking     2.  Hydration   3.   Fractional distillation   4.  Oxidation

In what order are these processes used?

  • A.   1,2,3,4
  • B.   1,3,2,4
  • C.   3,1,4,2
  • D.   3,1,2,4
19. Which of the following are NOT correct about proteins?
  • A.   Proteins are addition polymers
  • B.   Proteins possess amide linkages
  • C.   Proteins are hydrolysed to amino acids
  • D.   Proteins have the same type of linkage as in nylon
20. The products of hydrolysis of carbohydrates and proteins can be separated and identified using:
  • A.   fractional distillation
  • B.   filtration
  • C.   cracking
  • D.   chromatography