Post Utme Bayero University Kano Chemistry Past Questions and Answers

Question 11:

Which of the following are structural isomers?

A. Propanoic acid and propan-1,2diol
B. Propanol and propanone
C. Ethanoic acid propanoic acid
D. Ethan-1,2-diol and ethanoic acid

Question 12:

In the purification of impure sample of ethyl ethanoate synthesized by esterification, concentrated tetraoxocarbonate (IV) solution is used to remove

A. Water basic impurities
B. Basic impurities
C. Acidic impurities
D. Ethoxyethane

Question 13:

How hydrogen atoms does a single ring cycloalkane have less than the corresponding open chain-alkane?

A. Two
B. Three
C. Four
D. One

Question 14:

Equal moles of ethyne and hydrogen iodide react to give ____________

A. CH2 = CH2
B. CH2 = CH1
C. CH3 = CH3
D. CH2 = CH1

Question 15:

A substance that is used as a ripening agent fruit is, ____________

A. Ethane
B. Propene
C. Methane
D. Butane