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SAMPLE QUESTIONS FOR THE CHEMISTRY
PLACEMENT EXAM
Note: These questions are intended to represent the general level of
difficulty and areas of coverage
of the Chemistry Placement Exam.
They are NOT intended to be a complete representation of the specific types of questions to be found on the exam.
| 1. |
Aluminum reacts with element X to form a
compound with the formula Al2X3. Element X exists as
diatomic molecules, X2, in the gaseous state at normal
temperature and pressure. Element X must be |
| a) |
Nitrogen |
| b) |
Oxygen |
| c) |
Sulfur |
| d) |
Chlorine |
| 2. |
What is the coefficient of O2 when
the following equation is balanced? C2H4O + O2
® CO2 + H2O |
| a) |
2 |
| b) |
3 |
| c) |
4 |
| d) |
5 |
| 3. |
How many moles of GeH4 are needed to
form 8.00 moles of GeF3H according to the following reaction?
GeH4 + GeF4 ® 4 GeF3H |
| a) |
2.00 |
| b) |
4.00 |
| c) |
8.00 |
| d) |
16.00 |
| 4. |
According to its location in the periodic
table, the element bromine ( element # 35) is best described as |
| a) |
A metal |
| b) |
A non-metal |
| c) |
A transition metal |
| d) |
A metalloid |
| 5. |
Which of the following ions will have the
smallest ionic radius? |
| a) |
S 2-
|
| b) |
Cl - |
| c) |
K+ |
| d) |
Ca 2+ |
| 6. |
Which of the following molecules has trigonal
planar geometry? |
| a) |
BF3 |
| b) |
NH3 |
| c) |
PCl3 |
| d) |
IF3 |
| 7. |
Which of the following species is neither
acidic nor basic when dissolved in water? |
| a) |
HCl |
| b) |
NH3 |
| c) |
NaCl |
| d) |
NaHCO3 |
| 8. |
What will be the effect on the following equilibrium if the pressure is increased by decreasing the volume of the reaction vessel?
H2 (g) + I2(g) = 2HI(g) |
| a) |
The equilibrium will shift to the right. |
| b) |
The equilibrium will shift to the left. |
| c) |
The equilibrium will not shift. |
| d) |
The effect cannot be predicted. |
| 9. |
To the correct number of significant figures,
the result of the following calculation
[(11.13 - 2.6) x 104]/[103.15 x 10-
6]
should be reported as |
| a) |
8.27 x 108 |
| b) |
8.3 x 10-4 |
| c) |
8.3 x 108 |
| d) |
8.27 x 10-8 |
| 10. |
Jack three times as old as Jim. In four years,
Jack will be twice as old as Jim. How old is Jim? |
| a) |
4 years old |
| b) |
8 years old |
| c) |
12 years old |
| d) |
16 years old |
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Answers
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