The volume of an ideal gas is directly proportional to its  a. pressure  b. Celsius temperature  c. Kelvin temperature  d. Fahrenheit temperature

The volume of an ideal gas is directly proportional to its
 a. pressure
 b. Celsius temperature
 c. Kelvin temperature
 d. Fahrenheit temperature
by

1 Answer

Answer :

Kelvin temperature
by

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Description : Which of the following is standard temperature and pressure (STP)?  A. 0 degree Celsius and one atmosphere  B. 32 degree Fahrenheit and zero pressure  C. 0 degree Kelvin and one atmosphere  D. 0 degree Fahrenheit and zero pressure

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Last Answer : 13.33 ft^3/lbm

An ideal gas is maintained at constant temperature. If the pressure on the gas is doubled, the volume is  a. increased fourfold  b. doubled  c. reduced by half  d. decreased by a quarter

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According to Avogadro’s Hypothesis  (a) the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature  (b) the sum of partial pressure of mixture of two gases is sum of the two  (c) product of the gas constant and the molecular weight of an ideal gas is constant  (d) gases have two values of specific heat  (e) all systems can be regarded as closed systems.

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Last Answer : Answer : a

According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as  (a) temperature  (b) absolute  (c) absolute temperature, if volume is kept constant (d) volume, if temperature is kept constant  (e) remains constant,if volume and temperature are kept constant.

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Last Answer : Answer : c

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Last Answer : It is independent with the surface condition of the material

An ideal gas of volume 1liter and pressure 10 bar undergoes a quasistatic adiabatic expansion until the pressure drops to 1 bar. Assume γ to be 1.4 what is the final volume?  a. 3.18 l  b. 4.18 l  c. 5.18 l  d. 6.18 l

Description : An ideal gas of volume 1liter and pressure 10 bar undergoes a quasistatic adiabatic expansion until the pressure drops to 1 bar. Assume γ to be 1.4 what is the final volume?  a. 3.18 l  b. 4.18 l  c. 5.18 l  d. 6.18 l

Last Answer : 5.18 l

The pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas.  A.one-half  B.one-third  C.two-third  D.three-fourth

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Last Answer : Answer: C

An ideal gas as compared to a real gas at very high pressure occupies  (a) more volume  (b) less volume  (c) same volume  (d) unpredictable behaviour  (e) no such correlation.

Description : An ideal gas as compared to a real gas at very high pressure occupies  (a) more volume  (b) less volume  (c) same volume  (d) unpredictable behaviour  (e) no such correlation.

Last Answer : Answer : a

Which of the following statements is TRUE for an ideal gas, but not for a real gas?  A. PV = nRT  B. An increase in temperature causes an increase in the kinetic energy of the gas  C. The total volume of molecules on a gas is nearly the same as the volume of the gas as a whole  D. No attractive forces exists between the molecule of a gas

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Last Answer : PV = nRT

Water boils when:  A. Its saturated vapor pressure equals to the atmospheric pressure  B. Its vapor pressure equals 76cm of mercury  C. Its temperature reaches 212 degree Celsius  D. Its vapor pressure is 1 gram per sq. cm

Description : Water boils when:  A. Its saturated vapor pressure equals to the atmospheric pressure  B. Its vapor pressure equals 76cm of mercury  C. Its temperature reaches 212 degree Celsius  D. Its vapor pressure is 1 gram per sq. cm

Last Answer : Its saturated vapor pressure equals to the atmospheric pressure

The acceleration of a particular body is directly proportional to the resultant force acting on it & inversely proportional to its mass.  a. Pascal's Law  b. Joule's Law  c. Newton's Law  d. None of the above

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Convert the change of temperature from 20˚C to 30˚C to Kelvin scale.  a. 10 K  b. 293 K  c. 303 K  d. 273 K

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Last Answer : 10 K

What statement of the second law of thermodynamics states that it is impossible to build a device that operates in a cycle and produces no effect other than the transfer of heat from a lower-temperature body to a higher-temperature body?  A. Kelvin-Planck statement  B. Clausius statement  C. Kelvin statement  D. Rankine statement

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The molecular number density of an ideal gas at standard temperature and pressure in cm3  a. Froude number  b. Loschmidt number  c. Mach number  d. Reynold number

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Last Answer : Loschmidt number

To what conditions does a gas behave like an ideal gas?  a. low temperature and low pressure  b. low temperature and high pressure  c. high temperature and low pressure  d. high temperature and high pressure

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Last Answer : high temperature and low pressure

According to Avogadro’s law  A. the product of the gas constant and the molecular mass of an ideal gas is constant  B. the sum of partial pressure of the mixture of two gases is sum of the two  C. equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules  D. all of the above

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Last Answer : Answer: C

3.0 lbm of air are contained at 25 psia and 100 ˚F. Given that Rair = 53.35 ft-lbf/lbm- ˚F, what is the volume of the container?  A.10.7 ft^3  B.14.7 ft^3  C.15 ft^3  D.24.9 ft^3 Formula: use the ideal gas law pV = mRT T = (100 +460) ˚R V = mRT/p

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Last Answer : 24.9 ft^3

The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Charles’ law.  A. Yes  B. No

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Addition of heat at constant pressure to a gas results in  (a) raising its temperature  (b) raising its pressure  (c) raising its volume  (d) raising its temperature and doing external work  (e) doing external work.

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Last Answer : Answer : d

A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is  (a) 54°C  (b) 327°C  (c) 108°C  (d) 654°C  (e) 600°C

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Last Answer : Answer : b

What is defined as the quantity of heat needed to raise the temperature of one kilogram of water by one degrees Celsius?  a. Kilojoule  b. Btu  c. Kilocalorie  d. Latent heat

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“If the temperature o f a fixed quantity of a gas is held constant during a change of state, the volume varies inversely with the absolute pressure.  a. Charle’s Law  b. Boyle’s Law  c. Dalton’s Law  d. Amagat’s Law

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Last Answer : 190 in³

A gas having a volume of100 ft³ at 27ºC is expanded to 120 ft³by heated at constant pressure to what temperature has it been heated to have this new volume?  a. 87°C  b. 85°C  c. 76°C  d. 97°C t2= T2–T1

Description : A gas having a volume of100 ft³ at 27ºC is expanded to 120 ft³by heated at constant pressure to what temperature has it been heated to have this new volume?  a. 87°C  b. 85°C  c. 76°C  d. 97°C t2= T2–T1

Last Answer : 87°C