Jamb Chemistry 2000 Past Questions and Answers

Question 41:

• JAMB 2000

The least easily oxidized of the metals below is

A. Ca
B. Na
C. Zn
D. Al

Question 42:

• JAMB 2000

The repeating unit in natural rubber is

A. Alkyne
B. Isoprene
C. N-propene
D. Peoprene

Question 43:

• JAMB 2000

Unsaturated organic compounds are identified by decolourization of

A. Silver bromine and potassium tetraoxomanganate (VII) solutions
B. Bromine water and acidified potassium tetraoxomanganate (VII) solution
C. Silver bromide solution and bromine water
D. Bromine water and alkaline potassium tetraoxomanganate (VII) solution

Question 44:

• JAMB 2000

The conditions necessary for the extraction of a water molecule from two molecules of ethanol are

A. Less acid and lower temperature
B. Excess acid and a lower temperature
C. Excess acid and a higher temperature
D. Less acid and a higher temperature

Question 45:

• JAMB 2000

The chlorinated alkane often used industrially to remove grease is

A. Tetrachloromethane
B. Chloromethane
C. Trichloromethane
D. Dichlorometane