A real Gas can act as an ideal gas at

A real Gas can act as an ideal gas at
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Low pressure and High
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A real gas can act as an ideal gas in - (1) high pressure and low temperature (2) low pressure and high temperature (3) high pressure and high temperature (4) low pressure and low temperature

Description : A real gas can act as an ideal gas in - (1) high pressure and low temperature (2) low pressure and high temperature (3) high pressure and high temperature (4) low pressure and low temperature

Last Answer : (2) low pressure and high temperature Explanation: Real gases approximate ideal gases when their pressure is relatively low, and their temperature reasonably high. A real gas deviates increasingly from ideality as it is compressed and cooled to near the point at which it will condense into a liquid.

A real gas can act as an ideal gas in (1) high pressure and low temperature (2) low pressure and high temperature (3) high pressure and high temperature (4) low pressure and low temperature

Description : A real gas can act as an ideal gas in (1) high pressure and low temperature (2) low pressure and high temperature (3) high pressure and high temperature (4) low pressure and low temperature

Last Answer : low pressure and high temperature

Differentiate between Real gas and Ideal gas.

Description : Differentiate between Real gas and Ideal gas.

Last Answer : Differentiate between Real gas and Ideal gas.

Air standard cycle uses ____ as a working medium. a. Perfect gas b. Real gas c. Ideal gas d. Natural gas

Description : Air standard cycle uses ____ as a working medium. a. Perfect gas b. Real gas c. Ideal gas d. Natural gas

Last Answer : ANSWER a. Perfect gas

Van der Waals equation explains the behaviour of (a) Mixture of gases (b) Ideal gas (c) Real gas (d) Water gas

Description : Van der Waals equation explains the behaviour of (a) Mixture of gases (b) Ideal gas (c) Real gas (d) Water gas

Last Answer : Ans:(c)

What is meant by compressibility factor of gases? How does its value deviate from that of an ideal gas in case of real gases and what does it indicate?

Description : What is meant by compressibility factor of gases? How does its value deviate from that of an ideal gas in case of real gases and what does it indicate?

Last Answer : Ans. It is the ratio of the product PV to nRT. Z = PV/nRT. For ideal gas its value is unity. Z < 1 indicates negative deviation i.e. gas is more compressible due predominance of attractive forces. Z > 1 indicates positive deviation i.e. gas is less compressible due predominance of repulsive forces.

The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called __________ temperature. (A) Boyle (B) Inversion (C) Critical (D) Reduced

Description : The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called __________ temperature. (A) Boyle (B) Inversion (C) Critical (D) Reduced

Last Answer : (A) Boyle

The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the __________ temperature. (A) Critical (B) Boyle (C) Inversion (D) Reduced

Description : The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the __________ temperature. (A) Critical (B) Boyle (C) Inversion (D) Reduced

Last Answer : (B) Boyle

The expression for entropy change given by, ΔS = - nR ln (P2/P1), holds good for (A) Expansion of a real gas (B) Reversible isothermal volume change (C) Heating of an ideal gas (D) Cooling of a real gas

Description : The expression for entropy change given by, ΔS = - nR ln (P2/P1), holds good for (A) Expansion of a real gas (B) Reversible isothermal volume change (C) Heating of an ideal gas (D) Cooling of a real gas

Last Answer : (B) Reversible isothermal volume change

The equation, Cp- Cv = R, is true for __________ gas. (A) No (B) Any real (C) Only ideal (D) Both (B) and (C)

Description : The equation, Cp- Cv = R, is true for __________ gas. (A) No (B) Any real (C) Only ideal (D) Both (B) and (C)

Last Answer : (C) Only ideal

Pick out the correct statement. (A) A real gas on expansion in vacuum gets heated up (B) An ideal gas on expansion in vacuum gets cooled (C) An ideal gas on expansion in vacuum gets heated up (D) A real gas on expansion in vacuum cools down whereas ideal gas remains unaffected

Description : Pick out the correct statement. (A) A real gas on expansion in vacuum gets heated up (B) An ideal gas on expansion in vacuum gets cooled (C) An ideal gas on expansion in vacuum gets heated up (D) A real gas on expansion in vacuum cools down whereas ideal gas remains unaffected

Last Answer : (D) A real gas on expansion in vacuum cools down whereas ideal gas remains unaffecte

The compressibility factor for an ideal gas is 1. Its value for any other real gas is (A) 1 (B) < 1 (C) > 1 (D) Either (B) or (C), depends on the nature of the gas

Description : The compressibility factor for an ideal gas is 1. Its value for any other real gas is (A) 1 (B) < 1 (C) > 1 (D) Either (B) or (C), depends on the nature of the gas

Last Answer : D) Either (B) or (C), depends on the nature of the gas

When A Real Gas Behaves Like Ideal Gas?

Description : When A Real Gas Behaves Like Ideal Gas?

Last Answer : A real gas behaves like an ideal gas in low pressure and high temperature conditions.

The compressibility factor, x, is used for predicting the behavior of nonideal gases. How is the compressibility ty factor defined relative to an ideal gas? (subscript “c”refers to critical value)  A. z = P / Pc  B. z = pV/ RT  C. z = T /Tc  D. z = RT / pV Hint: for an real gases the compressibility factor, x, is an dimensionless constant given by pV=zRT. Therefore z = pV / RT

Description : The compressibility factor, x, is used for predicting the behavior of nonideal gases. How is the compressibility ty factor defined relative to an ideal gas? (subscript c refers to critical value)  A. ... compressibility factor, x, is an dimensionless constant given by pV=zRT. Therefore z = pV / RT

Last Answer : z = pV/ RT

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

Description : 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 ... same as the volume of the gas as a whole  D. No attractive forces exists between the molecule of a gas

Last Answer : PV = nRT

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

Under which of the following conditions does the behavior of a real gas resemble that of an ideal gas? Is it: w) under all conditions of temperature and pressure x) only at very high pressure y) only when the gas is near condensation z) only at low densities when the molecules are relatively far apart

Description : Under which of the following conditions does the behavior of a real gas resemble that of an ideal gas? Is it: w) under all conditions of temperature and pressure x) only at very high pressure ... when the gas is near condensation z) only at low densities when the molecules are relatively far apart  

Last Answer : ANSWER: Z -- ONLY AT LOW DENSITIES WHEN THE MOLECULES ARE RELATIVELY FAR APART

what is the ideal number of pages for a book about real life?

Description : what is the ideal number of pages for a book about real life?

Last Answer : I think the ideal number for a book about real life is 200 pages length. This will not make the other person lazy to finish the book, unless your story is really interesting. You need to make ... is worth a reading even the long one when you keep your readers interested. I love long thick books.

The characteristic equation of gases pv = mRT holds good for (a) mono atomic gases (b) diatomic gases (c)real gases (d) ideal gases

Description : The characteristic equation of gases pv = mRT holds good for (a) mono atomic gases (b) diatomic gases (c)real gases (d) ideal gases

Last Answer : Ans: c

Which have more entropy real crystal or ideal crystal and why?

Description : Which have more entropy real crystal or ideal crystal and why?

Last Answer : Ans. Real crystal has more entropy because it has more disorderness.

The diffusivity, DAB (for component A diffusing in B) is equal to the diffusivity DBA (for component B diffusing in A) for a binary mixture of (A) Newtonian liquids (B) Non-Newtonian liquids (C) Ideal gases (D) Real gases

Description : The diffusivity, DAB (for component A diffusing in B) is equal to the diffusivity DBA (for component B diffusing in A) for a binary mixture of (A) Newtonian liquids (B) Non-Newtonian liquids (C) Ideal gases (D) Real gases

Last Answer : (C) Ideal gases

A real crystal has more entropy than an Ideal crystal. Why?

Description : A real crystal has more entropy than an Ideal crystal. Why?

Last Answer : Ans. A real crystal has some disorder due to presence of defects in their structural arrangement, and Ideal crystal does not have any disorder.

Raoult's law is applicable to the (A) Ideal solutions (B) Real solutions (C) Mixture of water and alcohol

Description : Raoult's law is applicable to the (A) Ideal solutions (B) Real solutions (C) Mixture of water and alcohol

Last Answer : (A) Ideal solutions

Boundary layer exists in flow (A) Of real fluids (B) Over flat surfaces only (C) In pipes only (D) Of ideal fluids only

Description : Boundary layer exists in flow (A) Of real fluids (B) Over flat surfaces only (C) In pipes only (D) Of ideal fluids only

Last Answer : (A) Of real fluids

Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary. (A) I, II, III (B) II, III, V (C) I, II, V (D) II, IV, V

Description : Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to ... . (A) I, II, III (B) II, III, V (C) I, II, V (D) II, IV, V

Last Answer : (B) II, III, V

Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called __________ solutions. (A) Ideal (B) Real (C) Isotonic (D) None of these

Description : Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called __________ solutions. (A) Ideal (B) Real (C) Isotonic (D) None of these

Last Answer : (A) Ideal

Why the input resistance of an ideal OPAMP is infinite and output resistance is zero? secondly, how can we measure these resistances(input and output) in case of an ideal OPAMPand Real OP-AMP in the following conditions when 1- load is not connected. 2- load is connected.

Description : Why the input resistance of an ideal OPAMP is infinite and output resistance is zero? secondly, how can we measure these resistances(input and output) in case of an ideal OPAMPand Real OP-AMP in the following conditions when 1- load is not connected. 2- load is connected.

Last Answer : Ans- Ideal OP-AMP is a power ful concept. If one goes through the history of amplifying devices it becomes clear that less it loads the previous stage better the output signal. ie ... . Can refer application notes by device manufacturer available in internet for more precise and practical solutions.

A fluid whose viscosity does not change with the rate of deformation or shear strain is known as (A) Real fluid (B) Ideal fluid (C) Newtonian fluid (D) Non-Newtonian fluid

Description : A fluid whose viscosity does not change with the rate of deformation or shear strain is known as (A) Real fluid (B) Ideal fluid (C) Newtonian fluid (D) Non-Newtonian fluid

Last Answer : Answer: Option C

A fluid having no viscosity is known as (A) Real fluid (B) Ideal fluid (C) Newtonian fluid (D) Non-Newtonian fluid

Description : A fluid having no viscosity is known as (A) Real fluid (B) Ideal fluid (C) Newtonian fluid (D) Non-Newtonian fluid

Last Answer : Answer: Option B

Water is a __________ fluid. (A) Real (B) Ideal (C) Newtonian (D) Non-Newtonian

Description : Water is a __________ fluid. (A) Real (B) Ideal (C) Newtonian (D) Non-Newtonian

Last Answer : Answer: Option C

A fluid which obeys the Newton's law of viscosity is termed as(A) Real fluid (B) Ideal fluid (C) Newtonian fluid (D) Non-Newtonian fluid

Description : A fluid which obeys the Newton's law of viscosity is termed as (A) Real fluid (B) Ideal fluid (C) Newtonian fluid (D) Non-Newtonian fluid

Last Answer : Answer: Option C

Which one of the following statements is correct ? (a) Dynamic viscosity is the property of a fluid which is not in motion (b) Surface energy is a fluid property giving rise to the phenomenon of capillarity in water (c) Cavitation results from the action of very high pressure (d) Real fluids have lower viscosity than ideal fluids

Description : Which one of the following statements is correct ? (a) Dynamic viscosity is the property of a fluid which is not in motion (b) Surface energy is a fluid property giving rise to the phenomenon ... results from the action of very high pressure (d) Real fluids have lower viscosity than ideal fluids

Last Answer : (d) Real fluids have lower viscosity than ideal fluids