Waec Chemistry Past Questions For Year 2016
Question 6
An atom X consist of 6 protons, 6 electrons and 7 neutrons. Which of the following representations of the atom is correct?
- A. 136X
- B. 137X
- C. 196X
- D. 197X
Question 7
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 8
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 9
Aluminium is used in the manufacture or aircraft because it
- A. Is hard and brittle
- B. Is light and resists corrosion
- C. Has high density and conducts electricity
- D. Is malleable and ductile
Question 10
Metals can be stretched into wires because they are
- A. Ductile
- B. Good conductors
- C. Lustrous
- D. Malleable
