Waec Chemistry 2005 Past Questions and Answers

Question 31:

• WAEC 2005

Which of the following substances is a non-reducing sugar?

A. Sucrose
B. Glucose
C. Fructose
D. Maltose

Question 32:

• WAEC 2005

The colour of the solution formed when ethyne reacts with an acidic solution of potassium tetraoxomanganate (VII) is

A. Purple
B. Colourless
C. Green
D. Pink

Question 33:

• WAEC 2005

Fats are classified as

A. Hydrocarbons
B. Alkanoates
C. Alkanols
D. Carbohydrates

Question 34:

• WAEC 2005

Ethyne undergoes the following reactions except

A. Polymerisation
B. Addition
C. Substitution
D. Esterification

Question 35:

• WAEC 2005

Hardness in water can be removed by adding

A. Copper (ll) tetraoxosulphate (IV)
B. Sodium trioxocarbonate (IV)
C. Sodium chloride
D. Alum