Question 1
The pollution process in which oxygen depletion of natural waters by increased algae growth occurs because of contaminants such as excess phosphates is referred to as ________.
◦ anoxia
◦ biodegradation
◦ eutrophication
◦ phosphorylation
◦ saponification
Question 2
The VSEPR theory predicts molecular shapes for the noble gas compounds. Which of these is correct?
I) XeF
2 is linear.
II) XeOF
2 is T-shaped.
III) XeF
4 is square planar.
◦ I, II and III
◦ I and II
◦ I only
◦ II only
◦ III only