The principle applied in liquefaction of gases is (A) Adiabatic expansion (B) Joule-Thomson effect (C) Both (A) and (B) (D) Neither (A) nor (B)

The principle applied in liquefaction of gases is
(A) Adiabatic expansion
(B) Joule-Thomson effect
(C) Both (A) and (B)
(D) Neither (A) nor (B)
by

1 Answer

Answer :

(C) Both (A) and (B)
by

Related questions

6. Liquefaction of gases cannot be done by (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Merely compressing it beyond critical pressure (D) Adiabatic expansion against a piston or in a turbine

Description : 6. Liquefaction of gases cannot be done by (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Merely compressing it beyond critical pressure (D) Adiabatic expansion against a piston or in a turbine

Last Answer : (C) Merely compressing it beyond critical pressure

Claude process of gas liquefaction employs (A) Merely compression of gas beyond its critical pressure (B) Joule-Thomson expansion cooling (C) Heat exchange with colder stream (D) Adiabatic expansion against a piston or in a turbine

Description : Claude process of gas liquefaction employs (A) Merely compression of gas beyond its critical pressure (B) Joule-Thomson expansion cooling (C) Heat exchange with colder stream (D) Adiabatic expansion against a piston or in a turbine

Last Answer : (D) Adiabatic expansion against a piston or in a turbine

Linde process of gas liquefaction employs (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Adiabatic expansion against a piston or in a turbine (D) Merely compressing the gas beyond its critical pressure

Description : Linde process of gas liquefaction employs (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Adiabatic expansion against a piston or in a turbine (D) Merely compressing the gas beyond its critical pressure

Last Answer : (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

Joule-Thomson co-efficient depends on the (A) Pressure (B) Temperature (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Joule-Thomson co-efficient depends on the (A) Pressure (B) Temperature (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature. (A) Below (B) At (C) Above (D) Either 'b' or 'c'

Description : Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature. (A) Below (B) At (C) Above (D) Either 'b' or 'c'

Last Answer : A) Below

During Joule-Thomson expansion of gases (A) Enthalpy remains constant (B) Entropy remains constant (C) Temperature remains constant (D) None of these

Description : During Joule-Thomson expansion of gases (A) Enthalpy remains constant (B) Entropy remains constant (C) Temperature remains constant (D) None of these

Last Answer : (A) Enthalpy remains constant

Joule-Thomson experiment is (A) Isobaric (B) Adiabatic (C) Isenthalpic (D) Both (B) & (C)

Description : Joule-Thomson experiment is (A) Isobaric (B) Adiabatic (C) Isenthalpic (D) Both (B) & (C)

Last Answer : (D) Both (B) & (C)

Joule-Thomson co-efficient is the ratio of (A) Pressure change to temperature change occuring during adiabatic compression of a gas (B) Pressure change to temperature change occuring during adiabatic throttling of a gas (C) Temperature change to pressure change occuring during adiabatic compression of a gas (D) Temperature change to pressure change occuring during adiabatic throttling of a gas

Description : Joule-Thomson co-efficient is the ratio of (A) Pressure change to temperature change occuring during adiabatic compression of a gas (B) Pressure change to temperature change occuring during adiabatic ... a gas (D) Temperature change to pressure change occuring during adiabatic throttling of a gas

Last Answer : (D) Temperature change to pressure change occuring during adiabatic throttling of a gas

(1/V) (∂V/∂T)Pis the mathematical expression (A) Joule-Thomson co-efficient (B) Specific heat at constant pressure (Cp) (C) co-efficient of thermal expansion (D) Specific heat at constant volume (CV)

Description : (1/V) (∂V/∂T)Pis the mathematical expression (A) Joule-Thomson co-efficient (B) Specific heat at constant pressure (Cp) (C) co-efficient of thermal expansion (D) Specific heat at constant volume (CV)

Last Answer : (C) co-efficient of thermal expansion

Which one is true for a throttling process? (A) A gas may have more than one inversion temperatures (B) The inversion temperature is different for different gases (C) The inversion temperature is same for all gases (D) The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity

Description : Which one is true for a throttling process? (A) A gas may have more than one inversion temperatures (B) The inversion temperature is different for different gases (C) The inversion ... gases (D) The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity

Last Answer : (B) The inversion temperature is different for different gases

The Joule. Thomson expansion of a gas is an

Description : The Joule. Thomson expansion of a gas is an

Last Answer : The Joule. Thomson expansion of a gas is an A. Isothermal process B. Isochoric process C. Isoenthalpic process D. Isobaric process

Claude's liquefaction process employs the cooling of gases by (A) Expansion in an engine (B) Following a constant pressure cycle (C) Throttling (D) None of these

Description : Claude's liquefaction process employs the cooling of gases by (A) Expansion in an engine (B) Following a constant pressure cycle (C) Throttling (D) None of these

Last Answer : A) Expansion in an engine

Which of the following principle is used to produce low-temperatures'? (1) Super conductivity (2) Joule-Kelvin effect (3) Thermo-electric effect (4) Adiabatic demagnetization

Description : Which of the following principle is used to produce low-temperatures'? (1) Super conductivity (2) Joule-Kelvin effect (3) Thermo-electric effect (4) Adiabatic demagnetization

Last Answer : (4) Adiabatic demagnetization Explanation: Magnetic refrigeration is a cooling technology based on the magnetocaloiic effect. This technique can be used to attain extremely low temperatures, as well as the ... of a suitable material is caused by exposing the material to a changing magnetic field.

Which of the following principle is used to produce ‘low-temperatures’ ? (1) Super conductivity (2) Joule-Kelvin effect (3) Thermo-electric effect (4) Adiabatic demagneti-sation

Description : Which of the following principle is used to produce ‘low-temperatures’ ? (1) Super conductivity (2) Joule-Kelvin effect (3) Thermo-electric effect (4) Adiabatic demagneti-sation

Last Answer : Adiabatic demagneti-sation

When a gas is expanded from high pressure region to low pressure region; temperature change occurs". This phenomenon is related to the (A) Gibbs-Duhem equation (B) Gibbs-Helmholtz equation (C) Third law of thermodynamics (D) Joule-Thomson effect

Description : When a gas is expanded from high pressure region to low pressure region; temperature change occurs". This phenomenon is related to the (A) Gibbs-Duhem equation (B) Gibbs-Helmholtz equation (C) Third law of thermodynamics (D) Joule-Thomson effect

Last Answer : (D) Joule-Thomson effect

Throttling (Joule-Thomson effect) process is a constant __________ process. (A) Enthalpy (B) Entropy (C) Pressure (D) None of these

Description : Throttling (Joule-Thomson effect) process is a constant __________ process. (A) Enthalpy (B) Entropy (C) Pressure (D) None of these

Last Answer : (A) Enthalpy

Joule-Thomson effect i.e., a throttling process is a constant __________ process. (A) Entropy (B) Temperature (C) Internal energy (D) Enthalpy

Description : Joule-Thomson effect i.e., a throttling process is a constant __________ process. (A) Entropy (B) Temperature (C) Internal energy (D) Enthalpy

Last Answer : (D) Enthalpy

Actual flame temperature is always lower than the adiabatic flame temperature, because there is (A) No possibility of obtaining complete combustion at high temperature (B) Always loss of heat from the flame (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Actual flame temperature is always lower than the adiabatic flame temperature, because there is (A) No possibility of obtaining complete combustion at high temperature (B) Always loss of heat from the flame (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Adiabatic flame temperature of a fuel is dependent on the initial temperature of (A) Fuel (B) Air (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Adiabatic flame temperature of a fuel is dependent on the initial temperature of (A) Fuel (B) Air (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Adiabatic compression of a saturated water vapour makes it (A) Supersaturated (B) Superheated (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Adiabatic compression of a saturated water vapour makes it (A) Supersaturated (B) Superheated (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : B) Superheated

he gas law (PV = RT) is true for an __________ change. (A) Isothermal (B) Adiabatic (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : he gas law (PV = RT) is true for an __________ change. (A) Isothermal (B) Adiabatic (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Work done may be calculated by the expression ∫ p dA for __________ processes. (A) Non-flow reversible (B) Adiabatic (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Work done may be calculated by the expression ∫ p dA for __________ processes. (A) Non-flow reversible (B) Adiabatic (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is (A) ∞ (B) 1 (C) 0 (D) -ve

Description : The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is (A) ∞ (B) 1 (C) 0 (D) -ve

Last Answer : (C) 0

Joule-Thomson co-efficient for a perfect gas is (A) Zero (B) Positive (C) Negative(D) None of these

Description : Joule-Thomson co-efficient for a perfect gas is (A) Zero (B) Positive (C) Negative (D) None of these

Last Answer : (A) Zero

Joule-Thomson Co-efficient at any point on the inversion curve is (A) ∞ (B) +ve (C) 0 (D) -ve

Description : Joule-Thomson Co-efficient at any point on the inversion curve is (A) ∞ (B) +ve (C) 0 (D) -ve

Last Answer : (C) 0

What is the value of Joule-Thomson co-efficient for an ideal gas? (A) +ve (B) -ve (C) 0 (D) ∞

Description : What is the value of Joule-Thomson co-efficient for an ideal gas? (A) +ve (B) -ve (C) 0 (D) ∞

Last Answer : (C) 0

Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is (A) 0 (B) ∞ (C) +ve (D) -ve

Description : Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is (A) 0 (B) ∞ (C) +ve (D) -ve

Last Answer : (A) 0

Joule-Thomson co-efficient is defined as (A) µ = (∂P/∂T)H (B) µ = (∂T/∂P)H (C) µ = (∂E/∂T)H (D) µ = (∂E/∂P)H

Description : Joule-Thomson co-efficient is defined as (A) µ = (∂P/∂T)H (B) µ = (∂T/∂P)H (C) µ = (∂E/∂T)H (D) µ = (∂E/∂P)H

Last Answer : (B) µ = (∂T/∂P)H

In Joule-Thomson porous plug experiment, the (A) Enthalpy does not remain constant (B) Entire apparatus is exposed to surroundings (C) Temperature remains constant (D) None of these

Description : In Joule-Thomson porous plug experiment, the (A) Enthalpy does not remain constant (B) Entire apparatus is exposed to surroundings (C) Temperature remains constant (D) None of these

Last Answer : (D) None of these

Claude gas liquefaction process employs cooling (A) At constant pressure (B) By throttling (C) By expansion in an engine (D) None of these

Description : Claude gas liquefaction process employs cooling (A) At constant pressure (B) By throttling (C) By expansion in an engine (D) None of these

Last Answer : (C) By expansion in an engine

Linde gas liquefaction process employs cooling (A) By throttling (B) By expansion in an engine (C) At constant pressure (D) None of these

Description : Linde gas liquefaction process employs cooling (A) By throttling (B) By expansion in an engine (C) At constant pressure (D) None of these

Last Answer : (A) By throttling

Fire tube boilers are those in which a) Flue gases pass through tubes and water around it b) Water passes through the tubes and flue gases around it c) Work is done during adiabatic expansion d) Change is enthalpy

Description : Fire tube boilers are those in which a) Flue gases pass through tubes and water around it b) Water passes through the tubes and flue gases around it c) Work is done during adiabatic expansion d) Change is enthalpy

Last Answer : a) Flue gases pass through tubes and water around it

Water tube boilers are those in which a) Flue gases pass through tubes and water around it b) Water passes through the tubes and flue gases around it c) Work is done during adiabatic expansion d) Change is enthalpy

Description : Water tube boilers are those in which a) Flue gases pass through tubes and water around it b) Water passes through the tubes and flue gases around it c) Work is done during adiabatic expansion d) Change is enthalpy

Last Answer : b) Water passes through the tubes and flue gases around it

In case of an ideal gas, Joule Thomson coefficient is -

Description : In case of an ideal gas, Joule Thomson coefficient is -

Last Answer : In case of an ideal gas, Joule Thomson coefficient is - A. Zero B. Positive C. Negative D. Infinite

In thermodynamics, a throttling process, also called a _________, is a type of isenthalpic process where a liquid or gas is cooled as it passes from a higher pressure state to a lower pressure state.  a. Rankine Process  b. Carnot Cycle  c. Joule-Thomson process  d. Refrigeration process

Description : In thermodynamics, a throttling process, also called a _________, is a type of isenthalpic process where a liquid or gas is cooled as it passes from a higher pressure state to a lower pressure state.  a. Rankine Process  b. Carnot Cycle  c. Joule-Thomson process  d. Refrigeration process

Last Answer : Joule-Thomson process

What is defined as the ratio of the change in temperature to the change in pressure when a real gas is throttled?  A. Rankine coefficient  B. Kelvin coefficient  C. Maxwell-Boltzmann coefficient  D. Joule-Thomson coefficient

Description : What is defined as the ratio of the change in temperature to the change in pressure when a real gas is throttled?  A. Rankine coefficient  B. Kelvin coefficient  C. Maxwell-Boltzmann coefficient  D. Joule-Thomson coefficient

Last Answer : Joule-Thomson coefficient

Dry ice (solidified CO2 ) is used for the (A) Storage & shipment of frozen foods and ice-creams (B) Liquefaction of permanent gases (C) Liquefaction of natural gas (D) None of these

Description : Dry ice (solidified CO2 ) is used for the (A) Storage & shipment of frozen foods and ice-creams (B) Liquefaction of permanent gases (C) Liquefaction of natural gas (D) None of these

Last Answer : (A) Storage & shipment of frozen foods and ice-creams

Favourable conditions for the liquefaction of gases in general are (A) High pressure & low temperature (B) Low pressure & high temperature (C) High pressure & high temperature (D) Low pressure & low temperature

Description : Favourable conditions for the liquefaction of gases in general are (A) High pressure & low temperature (B) Low pressure & high temperature (C) High pressure & high temperature (D) Low pressure & low temperature

Last Answer : (A) High pressure & low temperature

In a furnace operation, which is not preheated? (A) Solid fuels (B) Hydrocarbon containing fuel gases (e.g. coke oven gas, refinery gas etc.) (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : In a furnace operation, which is not preheated? (A) Solid fuels (B) Hydrocarbon containing fuel gases (e.g. coke oven gas, refinery gas etc.) (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Natural draught produced by a chimney depends upon the (A) Density of the chimney gases (B) Height of the chimney (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Natural draught produced by a chimney depends upon the (A) Density of the chimney gases (B) Height of the chimney (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

The ease of liquefaction of noble gases decreases in the order

Description : The ease of liquefaction of noble gases decreases in the order

Last Answer : The ease of liquefaction of noble gases decreases in the order A. `He gt Ne gt Ar gt Kr gt Xe` B. `Xe gt Kr ... gt Ne` D. `Ar gt Kr gt Xe gt He gt Ne`

. A Rotameter works on the principle of __________ pressure drop. (A) Constant(B) Variable(C) Both (A) & (B)(D) Neither (A) nor (B)

Description : . A Rotameter works on the principle of __________ pressure drop. (A) Constant (B) Variable (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (A) Constant

Economy of a multiple effect evaporator depends upon the (A) Heat balance consideration (B) Rate of heat transfer (C) Both (A) and (B) (D) Neither (A) nor (B

Description : Economy of a multiple effect evaporator depends upon the (A) Heat balance consideration (B) Rate of heat transfer (C) Both (A) and (B) (D) Neither (A) nor (B

Last Answer : (A) Heat balance consideration

The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids (A) Having high viscosities (B) Moving at low velocities (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids (A) Having high viscosities (B) Moving at low velocities (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam. (A) Wetness (B) Mass flow rate (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'

Description : The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam. (A) Wetness (B) Mass flow rate (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'

Last Answer : (C) Both 'a' & 'b'

Gases have (a) A definite shape but not volume (b) A definite volume and shape (c) A definite volume but not shape (d) Neither definite volume nor shape

Description : Gases have (a) A definite shape but not volume (b) A definite volume and shape (c) A definite volume but not shape (d) Neither definite volume nor shape

Last Answer : Ans:(d)

The expression, nCv(T2- T1), is for the __________ of an ideal gas. (A) Work done under adiabatic condition (B) Co-efficient of thermal expansion (C) Compressibility (D) None of these

Description : The expression, nCv(T2- T1), is for the __________ of an ideal gas. (A) Work done under adiabatic condition (B) Co-efficient of thermal expansion (C) Compressibility (D) None of these

Last Answer : (A) Work done under adiabatic condition

The thermodynamic law, PVy = constant, is not applicable in case of (A) Ideal compression of air (B) Free expansion of an ideal gas (C) Adiabatic expansion of steam in a turbine (D) Adiabatic compression of a perfect gas

Description : The thermodynamic law, PVy = constant, is not applicable in case of (A) Ideal compression of air (B) Free expansion of an ideal gas (C) Adiabatic expansion of steam in a turbine (D) Adiabatic compression of a perfect gas

Last Answer : (B) Free expansion of an ideal gas

What happens in a reversible adiabatic expansion process? (A) Heating takes place (B) Cooling takes place (C) Pressure is constant (D) Temperature is constant

Description : What happens in a reversible adiabatic expansion process? (A) Heating takes place (B) Cooling takes place (C) Pressure is constant (D) Temperature is constant

Last Answer : (B) Cooling takes place