Waec Chemistry 2016 Past Questions and Answers

Question 11:

• WAEC 2016

An unsaturated solution differs from a saturated solution at a given temperature because it

A. Cannot dissolve more solute
B. Can hold more solute than it can actually dissolve
C. Can still dissolve more solute at given temperature
D. Form crystal more easily on cooling

Question 12:

• WAEC 2016

Which of the following arrangements shows increasing order of reactivity of the halogens?

A. F₂ > Cl₂ > Br₂ >I₂
B. I₂ < Br₂ < Cl₂
C. F₂ < Cl₂ < Br₂
D. I₂ > Br₂ > Cl₂ > F₂

Question 13:

• WAEC 2016

The shape of the water molecule is_______?

A. Linear
B. Pyramidal
C. Tetrahedral
D. V-shaped

Question 14:

• WAEC 2016

Which of the following elements would produce coloured ion in agueous solution?

A. Calcuim
B. Copper
C. Magnesuim
D. Sodium

Question 15:

• WAEC 2016

The minimum amount of energy required for effective collisions between reacting particles is known as

A. Activation energy
B. Bond energy
C. Kinetic energy
D. Potential energy