Post Utme Ebonyi State University Chemistry Past Questions and Answers

Question 11:

An electron can be added to a halogen atom to form a halide ion with ____________

A. 2 valence electrons
B. 3 valence electrons
C. 7 valence electrons
D. 8 valence electrons

Question 12:

The property of Chlorine which causes hydrogen chloride to be more ionic than the chlorine molecules are its ____________

A. Electron valency
B. Electron affinity
C. Electron positivity
D. Electron negativity

Question 13:

Which of the following hydrogen halides has the highest entropy value?

A. HF
B. \(\mathrm{HCl}\)
C. \(\mathrm{HBr}\)
D. HI

Question 14:

Which of these compounds is a normal salt?

A. NAHS
B. \(\mathrm{NAHSO}_{4}\)
C. \(\mathrm{NAHCO}_{3}\)
D. \(\mathrm{NA}_{2} \mathrm{CO}_{3}\)

Question 15:

The allotrope of carbon used in the decolourization of sugar is ____________

A. Graphite
B. Soot
C. Charcoal
D. Lampblack