Chemistry 2016 Waec Past Questions and Answers

Question 21 :

• WAEC 2016

The general gas equation \(\frac{PV}{T}\) = K is a combination of

A. Boyle's and Charles' laws
B. Boyle's and Graham's laws
C. Charles' and Graham's laws
D. Dalton's and Graham's laws

Question 22 :

• WAEC 2016

The spreading of the scent of a flower in a garden is an example of_____?

A. Brownian motion
B. Diffusion
C. Osmosis
D. Tynadal effect

Question 23 :

• WAEC 2016

Propane carbon(IV)oxide diffuse at the same rate because [H = 1.00, C = 12.0, O = 16.0]

A. They are both gases
B. Their molecules contain carbon
C. They have the same relative molecular mass
D. Both are denser than air

Question 24 :

• WAEC 2016

The energy which accompanies the addition of an electron to an isolated gaseous atom is

A. Atomization
B. Electronegativity
C. Electron affinity
D. Ionization

Question 25 :

• WAEC 2016

An aqueous solution of (NH4)2 SO4 is

A. Acidic
B. Alkaline
C. Amphoteric
D. Neutral