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
At constant pressure, properties of gases that undergo changes are _______
2 / 50
The individual pressure of a gas in a mixture of gases is called ______
3 / 50
In a gas. the molecules on the average are separated by large ______ distances
4 / 50
The process of separating a pure substance from a solution is called _______
5 / 50
International system of unit or system international can be written as an acronym _______________
6 / 50
The gas law that explain the effusion of gas is ____________
7 / 50
7. In fractional distillation, a mixture of liquids is separated based on their _______
8 / 50
The volume occupied by 1 mole of oxygen gas at s.t.p. is ________ dm3
9 / 50
9. According to the kinetic theory of gases, a gas can be compressed much more than a liquid or solid because _________
10 / 50
10. Which of the followings will not diffract X-rays?
11 / 50
11. An ideal gas differs from a real gas in that the molecules of an ideal gas __________.
12 / 50
The mathematical equation for Charles law can be written as ________
13 / 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.
14 / 50
14. Which of the following statements is false?
15 / 50
Numerical value of the universal gas constant is ____ J/K/mol
16 / 50
At relatively low pressure, there are no ___________ forces between gas molecules
17 / 50
17. 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?
18 / 50
The mathematical equation for Boyle's law can be written as ___________
19 / 50
19. Which of these alkanes is expected to have the highest viscosity?
20 / 50
Modern approach to chemistry deals with equilibrium properties, ability to change and ______
21 / 50
21. Which of the followings is not a characteristic of an ideal solution?
22 / 50
Physical Chemistry is concern with two major aspects, namely ability to change and _____
23 / 50
Constituents in a solution can be separated by applying the principle of ___________
24 / 50
A gas that obeys all the gas laws is called an ______
25 / 50
Apparatus that arc basically used for determining the melting points of substances are called ____________
26 / 50
Temperature, length, time and mass are examples of ________
27 / 50
27. A mixture of iron filings and copper filings could best be separated by _________
28 / 50
28. What is the average speed (actually the root-mean square speed) of a neon atom at 27 C?
29 / 50
An expression for the combined gas law can be expressed as ________
30 / 50
30. A liquid will "wet" a surface if: ______
31 / 50
31. Which of the following is not a colligative property?
32 / 50
A homogenous materials that contain only one substance is called a ___________
33 / 50
The temperature, above which a substances can exist only in gaseous state is called _________
34 / 50
Meter, kelvin, second and kilogram are examples of _______
35 / 50
35. Ethanol dissolved in water would be an example of ___________
36 / 50
Gas molecules confined to a container are in a state of ____________ motion
37 / 50
For 1 mole of an ideal gas, a plot of PV against T will give a straight line whose slope is equal to __________
38 / 50
38. The concentration of KBr in a solution prepared by dissolving 2.21 g of KBr in 897 g of water is __________ molal.
39 / 50
39. An atom on the face-centre of a unit cell is shared by _________ unit cells.
40 / 50
40. 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.
41 / 50
At constant temperature, the gas law that is most suitable is called _____ law
42 / 50
42. 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.
43 / 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 __________
44 / 50
A skillful process of identifying. substituting and using correct apparatus appropriately in the laboratory is called _____
45 / 50
At high temperature and low pressure, gases tend to undergo phenomena that is called ___________
46 / 50
________ is an instrument that can be used to measure the strength of an acid or a base
47 / 50
The Beckman thermometer IS used in the Beckman's apparatus for determining __________ of a substance
48 / 50
-______is a state of matter that does not have a definite shape nor volume
49 / 50
At low temperature and high pressure, gases tend to __________
50 / 50
The rate at which gases diffuse is inversely proportional to the Square root of their ____________
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