Jamb Chemistry 2007 Past Questions and Answers

Question 41:

• JAMB 2007

Certain useful waxes are composed mainly of

A. Amino acids
B. Glycerols
C. Alkanols
D. Alkanoates

Question 42:

• JAMB 2007

The IUPAC nomenclature of compound CH₃CH₂COOCH₂CH₃ is

A. Propyl ethanoate
B. Ethyl butanoate
C. Ethyl propanoate
D. Methyl butanoate

Question 43:

• JAMB 2007

When temporary hard water is boiled for sometime in a kettle, the inner surface of the kettle becomes coated with a deposit of

A. Calcium tetraoxosulphate(VI)
B. Calcium trioxocarbonate (IV)
C. Calcium hydrogentrioxocarbonate (IV)
D. Aluminium trioxocarbonate (IV)

Question 44:

• JAMB 2007

A supersaturated solution is said to contain

A. More solute than it can dissolve at that temperature in the presence of undissolved solute
B. As much solute as it can dissolve at that temperature in the presence of undissolved solute
C. As much solute as it can dissolve at that temperature
D. More solute than it can dissolve at that temperature

Question 45:

• JAMB 2007

The presence of nitrogen in air is to slow down

A. Respiration and combustion
B. Combustion and corrosion
C. Corrosion and respiration
D. Respiration and transpiration