ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
CHM103
1 / 50
International system of unit or system international can be written as an acronym _______________
2 / 50
Apparatus that arc basically used for determining the melting points of substances are called ____________
3 / 50
3. Which of the following statements is false?
4 / 50
In a gas. the molecules on the average are separated by large ______ distances
5 / 50
The gas law that consider the total pressure of a gas as a function of the pressures exerted by the individual gases that make up the mixture is __________
6 / 50
Modern approach to chemistry deals with equilibrium properties, ability to change and ______
7 / 50
7. An ideal gas differs from a real gas in that the molecules of an ideal gas __________.
8 / 50
8. Which of the followings is not a characteristic of an ideal solution?
9 / 50
At constant pressure, properties of gases that undergo changes are _______
10 / 50
10. A liquid will "wet" a surface if: ______
11 / 50
The mathematical equation for Boyle's law can be written as ___________
12 / 50
_________ of a gas is proportional to the mean kinetic energy of the molecules in a gas
13 / 50
13. A mixture of iron filings and copper filings could best be separated by _________
14 / 50
14. The vapor pressure of pure ethanol at 60 °C is 0.459 atm. Raoult's Law predicts that a solution prepared by dissolving 10.0 mmol naphthalene (nonvolatile) in 90.0 mmol ethanol will have a vapour pressure of __________ atm.
15 / 50
15. The Henry's law constant for helium gas in water at 30 °C is 0.00037 M/atm. When the partial pressure of helium above a sample of water is 0.650 atm, the concentration of helium in the water is __________ M.
16 / 50
Physical Chemistry is concern with two major aspects, namely ability to change and _____
17 / 50
A plot showing the variation of volume with temperature at constant pressure is called __________
18 / 50
For 1 mole of an ideal gas, a plot of PV against T will give a straight line whose slope is equal to __________
19 / 50
The gas law that explain the effusion of gas is ____________
20 / 50
Temperature, length, time and mass are examples of ________
21 / 50
21. The concentration of KBr in a solution prepared by dissolving 2.21 g of KBr in 897 g of water is __________ molal.
22 / 50
The Beckman thermometer IS used in the Beckman's apparatus for determining __________ of a substance
23 / 50
The temperature, above which a substances can exist only in gaseous state is called _________
24 / 50
24. In fractional distillation, a mixture of liquids is separated based on their _______
25 / 50
The individual pressure of a gas in a mixture of gases is called ______
26 / 50
26. A sample of oxygen occupies 47.2 liters under a pressure of 1240 torr at 25 $^{o}C$. What volume would it occupy at 25$^{o}C$ if the pressure were decreased to 730 torr?
27 / 50
The equation of ideal gas can be expressed as ______
28 / 50
28. Which of these alkanes is expected to have the highest viscosity?
29 / 50
The rate at which gases diffuse is inversely proportional to the Square root of their ____________
30 / 50
30. An atom on the face-centre of a unit cell is shared by _________ unit cells.
31 / 50
A solution is prepared by dissolving calcium chloride in water and diluting to 500.0 mL. If this solution contains 44 ppm chloride ions, the concentration of calcium ions is __________ ppm.
32 / 50
At high temperature and low pressure, gases tend to undergo phenomena that is called ___________
33 / 50
At constant temperature, the gas law that is most suitable is called _____ law
34 / 50
34. What is the average speed (actually the root-mean square speed) of a neon atom at 27 C?
35 / 50
A gas that obeys all the gas laws is called an ______
36 / 50
Meter, kelvin, second and kilogram are examples of _______
37 / 50
Constituents in a solution can be separated by applying the principle of ___________
38 / 50
A skillful process of identifying. substituting and using correct apparatus appropriately in the laboratory is called _____
39 / 50
At low temperature and high pressure, gases tend to __________
40 / 50
40. Which of the following is not a colligative property?
41 / 50
41. According to the kinetic theory of gases, a gas can be compressed much more than a liquid or solid because _________
42 / 50
42. Which one of the following statements most accurately relates the properties of a liquid at room temperature with its intermolecular forces?
43 / 50
43. Ethanol dissolved in water would be an example of ___________
44 / 50
The mathematical equation for Charles law can be written as ________
45 / 50
The process of separating a pure substance from a solution is called _______
46 / 50
The volume occupied by 1 mole of oxygen gas at s.t.p. is ________ dm3
47 / 50
-______is a state of matter that does not have a definite shape nor volume
48 / 50
An expression for the combined gas law can be expressed as ________
49 / 50
Numerical value of the universal gas constant is ____ J/K/mol
50 / 50
50. Which of the followings will not diffract X-rays?
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