Chemistry Past Questions and Answers

What will happen if an aluminium spoon is used to stir a solution of iron (II) trioxonitrates (V)?

A The spoon will be oxidized while the iron (II) ions will be reduced to the metal
B The spoon will increase in size
C The spoon will be reduced while the iron (II) ions will be oxidized
D The spoon will be reduced

Question 12:

The enzymes responsible for converting sucrose into two simple isomeric sugars is

A Maltase
B Amylase
C Invertase
D Lactase

Question 13:

The decolourization of purple colour of tetraoxomanganate (VII) ion is a test for

A Alkenes
B Alkanols
C Alkanals
D Alkanes

Question 14:

Which of the following are structural isomers?

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

Question 15:

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

A Water
B Basic impurities
C Acidic impurities
D Ethoxyethane