Waec Chemistry 2002 Past Questions and Answers

Question 11:

• WAEC 2002

The following compounds are hydrocarbons except

A. Methylpropanoate
B. 2-methylbutane
C. Benzene
D. Cyclohexane

Question 12:

• WAEC 2002

Which of the following statements about soapless detergents is correct? They

A. Lather readily with hard water
B. Increase the surface tension of water
C. Cause hydrolysis of salts in water
D. From a curdy precipitate with soft water

Question 13:

• WAEC 2002

If the relative molecular mass of an element is not a whole number, it can be deduced that the element is

A. Naturally radioactive
B. Abundant in nature
C. A transition metal
D. An isotopic mixture

Question 14:

• WAEC 2002

The atom of an element X is represented as \(^y_z X\). The basic chemical properties of X depend on the value of

A. Y
B. Z
C. Y - Z
D. Z - Y

Question 15:

• WAEC 2002

The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?

A. 16
B. 17
C. 18
D. 19