General Properties of Gases: MCQ Test
25 questions · pick one option for each · submit when you finish to see your score and the correct answers.
Question 1 of 25
All gases attain zero volume when the temperature is
- A273°C
- B27.3°C
- C-273°C
- D0°C
Question 2 of 25
A chemical reaction between gases is a necessary condition for diffusion of gases.
- Abe possible
- Bmay not be possible
- Cbe slow
- Dbe fast
Question 3 of 25
Which of the following laws is not related to gases?
- ABoyle's Law
- BCharles's Law
- CGay-Lussac's law
- DFaraday's law
Question 4 of 25
The law of diffusion of gases is used in-
- Ain separating isotopes
- BIn determining the vapor density of gases
- Cseparating a mixture of gases
- DIn all of these
Question 5 of 25
If the pressure of a gas is tripled at constant temperature, its volume will become
- Athird
- Bthird
- Chalf
- Dquarter
Question 6 of 25
Which is the correct relationship between the diffusion rates of gases and their densities?
- Ar¹/r²=√d¹/d²
- Br¹/r²√d²/d¹
- Cr¹/r²=d¹/d²
- Dr¹/r²=d²/d¹
Question 7 of 25
Under the same conditions of temperature and pressure, whose number is the same in equal volumes of different gases?
- Aof the atom
- Bof the molecule
- Cof the radical
- Dof electron
Question 8 of 25
A gas lighter than air is
- Aoxygen
- Bammonia
- Cchlorine
- DPropane
Question 9 of 25
The energy of an ideal gas depends on
- Aat stake
- Bon volume
- Cat temperature
- Don the number of moles
Question 10 of 25
When the volume of a gas is reduced at constant temperature, its pressure
- Agoes down
- Bincreases
- CFirst it decreases and then it increases.
- Dremains unchanged
Question 11 of 25
The volume of a gas at constant pressure is directly proportional to its absolute temperature. This is called
- ACharles's Law
- BBoyle's Law
- CGelussec's law
- DGraham's Law
Question 12 of 25
Which law (principle) states that the volume of an ideal gas at constant pressure is directly proportional to the absolute temperature?
- AJoule's law
- BCharles's Law
- CAvogadro's law
- DBoyle's Law
Question 13 of 25
The volume of 22 grams of CO² at NTP will be
- A22.4 liters
- B11.2 litres
- C44.8 liters
- D2.24 liters
Question 14 of 25
What is the molecular weight of a gas relative to its vapor density?
- Adouble
- Btriple
- Cfour times
- Dhalf
Question 15 of 25
The rate of diffusion of CO² is less than that of air because it is more diffusive than air.
- Ais lighter
- Bis heavy
- CIt is quite light
- Dare quite heavy
Question 16 of 25
The pressure/density value for a given amount of gas at a given temperature remains constant. Which law explains this conclusion?
- Afrom Charles's law
- Bfrom Boyle's law
- CFrom Pascal's law
- Dfrom the design of the Avogadro
Question 17 of 25
Who formulated the law of diffusion of gases?
- ABoyle
- BCharles
- Cavocado
- DGram
Question 18 of 25
In the gaseous equation pV=RT, nR represents
- AAny atom of the gas
- BOne gram of gas
- Cone mole of gas
- Done liter of gas
Question 19 of 25
The relative velocities of diffusion of different gases at a fixed temperature and pressure are inversely proportional to the square root of their densities." This law is
- ABoyle's Law
- BCharles's Law
- CGraham's Law
- DDalton's law
Question 20 of 25
rate of diffusion of a gas
- Ais directly proportional to the density
- BIt is directly proportional to the molecular weight.
- Cis directly proportional to the square root of the molecular weight
- Dis inversely proportional to the square root of the molecular weight
Question 21 of 25
The ratio of the rates of diffusion of oxygen and hydrogen gas is
- A0.044444444444444
- B0.042361111111111
- C0.043055555555556
- D0.084027777777778
Question 22 of 25
Absolute zero temperature is—
- Athe starting point of any temperature scale
- Btheoretically lowest possible temperature
- CThe temperature at which all liquid substances freeze.
- DThe temperature at which all substances are in the vapor phase.
Question 23 of 25
When an open bottle of perfume is placed in a corner of a room, its fragrance spreads throughout the room. Why does this happen?
- Aevaporation
- Bevaporation
- Cdiffusion
- Dsublimation
Question 24 of 25
The vapor density of a gas is 14, its molecular weight will be
- A14
- B21
- C28
- D43
Question 25 of 25
15. The natural process by which gases mix with each other despite differences in densities, against the gravitational force of the Earth, is called
- Avaporization of gases
- BLiquefaction of gases
- Cdiffusion of gases
- Devaporation of gases