Post Utme Chemistry Past Questions and Answers

Question 811:

For a reaction in equilibrium, the species involved in the equilibrium constant expression are ____________

A. Gaseous and solid species
B. Liquid and sod species
C. Solid and dissolved species
D. Gaseous and dissolved species

Question 812:

A phenomenon where an element exists indifferent forms in the same physical state is known as ____________

A. Isomerism
B. Amorphism
C. Allotropy
D. Isotropy

Question 813:

The substance often used for vulcanization of rubber is ____________

A. Chlorine
B. Hydrogen peroxide
C. Sulphur
D. Tetraoxosulphate(VI) acid

Question 814:

A gas that is not associated with global warming is ____________

A. CO
B. SO
C. CH 4
D. H

Question 815:

Which of the following is a physical change?

A. The bubbling of chlorine
B. The bubbling of chlorine into a jar containing hydfogen
C. The dissolution of sodium chloride in water
D. The passing of steam over heated iron