Chemistry 2014 Waec Past Questions and Answers

Question 21 :

• WAEC 2014

The vapour pressure of a given volume of liquid increase when the

A. Liquid becomes saturated with a salt
B. Volume of the liquid increases
C. Temperature of the liquid falls
D. Temperature of the Liquid rises

Question 22 :

• WAEC 2014

Which of the following statements about volatile liquids is correct? They have

A. High vapour pressure and low boiling point
B. High vapour pressure and high boling point
C. Low vapour pressure and low boining point
D. Low vapour pressure and high boiling point

Question 23 :

• WAEC 2014

The type of energy changes that accompany the mixing of a strong acid to a strong base is

A. Electrical
B. Heat
C. Light
D. Sound

Question 24 :

• WAEC 2014

Zinc oxide is said to be amphoteric because it

A. Forms an acid salt
B. Is an insoluble base
C. Forms a double salt
D. Reacts with a base or an acid

Question 25 :

• WAEC 2014

Which of the following substances with the corresponding pH value is an alkali?
Substance pH

A. Lime 2.4
B. Banana 4.6
C. Distilled water 7.0
D. Milk of magnesia 10.5