Waec Chemistry 2016 Past Questions and Answers

Question 6:

• WAEC 2016

The boiling points of HF, H2O and NH3 increase in the order of

A. NH₃
B. H₂O < HF
C. HF < NH₃ < H₂O
D. NH₃ < HF < H₂O

Question 7:

• WAEC 2016

Chemicals that are produced in small quantities and with very degree of purity are

A. Bulk chemicals
B. Fine chemicals
C. Heavy chemicals
D. Light chemicals

Question 8:

• WAEC 2016

The mass of potassium hydroxide required to make 300.ocm³ of 0.4 moldm^-3 solution is {KOH = 56.0}

A. 26.88g
B. 13.44g
C. 6.72g
D. 3.36g

Question 9:

• WAEC 2016

Metals can be stretched into wires because they are

A. Ductile
B. Good conductors
C. Lustrous
D. Malleable

Question 10:

• WAEC 2016

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