Description : If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as (A) Solubility increases as temperature ... (D) Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution
Last Answer : (B) Solubility increases as temperature decreases
Description : . The pressure and power requirement of a gas fan at constant speed & capacity varies __________ the gas density. (A) Directly as (B) Inversely as square root of (C) Inversely as (D) As square of
Last Answer : (A) Directly as
Description : Speed of sound in an ideal gas depends on its (A) Temperature (B) Pressure (C) Specific volume (D) None of these
Last Answer : (A) Temperature
Description : In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature). (A) 1/√T (B) 1/T (C) √T (D) T
Last Answer : (C) √T
Description : In case of non-ideal gases and liquids, the molal diffusivity (A) Varies inversely as the pressure (B) Varies directly as the pressure (C) Is independent of pressure (D) Is equal to the volumetric diffusivity
Last Answer : (C) Is independent of pressure
Description : In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction, (A) Inversely (B) Linearly (C) Exponentially (D) None of these
Last Answer : (B) Linearly
Description : Relative volatility varies with the concentration of component for an ideal solution. The relative volatility of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of ... law (D) Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law
Last Answer : (D) Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law
Description : 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
Last Answer : Loschmidt number
Description : In the stratosphere, why does temperature increase with increasing height? (a) Conduction. (b) Convection. (c) Greater absorption of ultraviolet radiation at the top of the strato- sphere. (d ... you go up through the strato- sphere, thus the ideal gas law requires temperature to increase too.
Last Answer : Greater absorption of ultraviolet radiation at the top of the strato- sphere.
Description : In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas). (A) 1/√M (B) √M (C) 1/M (D) M
Last Answer : (A) 1/√M
Description : Specific volume of an ideal gas is (A) Equal to its density (B) The reciprocal of its density (C) Proportional to pressure (D) None of these
Last Answer : (B) The reciprocal of its density
Description : Pick out the wrong statement. (A) The form drag is dependent upon the occurrence of a wake (B) The shear stress at any given cross-section of a pipe for steady flow (either laminar or turbulent ... of viscosity (D) Existence of the boundary layer in fluid flow is because of viscosity of the fluid
Last Answer : (C) An ideal fluid is the one, which has negligible surface tension and obeys the Newton's law of viscosity
Description : In an ideal P.F.R. at steady state conditions (A) The composition of reactants remains constant along a flow path (B) The conversion of the reactant varies from point to point along a flow path (C) There is no lateral mixing of fluid (D) There may be diffusion along the flow path
Last Answer : (B) The conversion of the reactant varies from point to point along a flow path
Description : The volume (V) of a mass of gas varies directly as its absulute temperature (T) and iversely as the pressure (P) applied to it. The gas occupies a vol
Last Answer : The volume (V) of a mass of gas varies directly as its absulute temperature (T) and iversely as ... and pressure are 250 ml and 320 Pa respectively?
Description : The volume (V) of a mass of gas varies directly as its absolute temperature (T) and inversely as the pressure (P) applied to it. The gas occupies a vo
Last Answer : The volume (V) of a mass of gas varies directly as its absolute temperature (T) and inversely as ... and pressure are 200 ml and 250 Pa respectively?
Description : “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
Last Answer : Boyle’s Law
Description : 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
Last Answer : Answer: B
Description : According to Gay-Lussac law, the absolute pressure of a given mass of a perfect gas varies __________ as its absolute temperature, when the volume remains constant. A. directly B. indirectly
Last Answer : Answer: A
Description : 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 ... , if temperature is kept constant (e) remains constant,if volume and temperature are kept constant.
Last Answer : Answer : c
Description : In an isothermal atmosphere, the pressure (A) Decreases linearly with elevation (B) Remain constant (C) Varies in the same way as the density (D) Increases exponentially with elevation
Last Answer : Answer: Option C
Description : In case of centrifugal fan or blower, the gas capacity varies as (A) Speed (B) (Speed) 2 (C) (Speed) 3 (D) (Speed) 0.5
Last Answer : (A) Speed
Description : Pressure of gas depends on the A. density of gas B. mean square speed of gas molecules C. both A and B D. temperature
Last Answer : both A and B
Description : The energy of activation of a chemical reaction: (A) Is same as heat of reaction at constant pressure (B) Is the minimum energy which the molecules must have before the reaction can take place (C) Varies as fifth power of the temperature (D) Both (B) and (C)
Last Answer : (B) Is the minimum energy which the molecules must have before the reaction can take place
Description : Equilibrium constant of a reaction varies with the (A) Initial concentration of the reactant (B) Pressure (C) Temperature (D) None of these
Last Answer : C) Temperature
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
Description : Equation which relates pressure, volume and temperature of a gas is called the (A) Equation of state (B) Gibbs Duhem equation (C) Ideal gas equation (D) None of these
Last Answer : (A) Equation of state
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
Description : Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas law) for all gases are (A) Always greater than one (B) Same at the same reduced temperature (C) Same at the same reduced pressure (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : Clausius-Clapeyron Equation gives accurate result, when the (A) Vapour pressure is relatively low and the temperature does not vary over wide limits (B) Vapour obeys the ideal gas law and the latent heat of ... is negligible compared with that in the vapour state (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : A gas shows deviation from ideal behaviour at (A) Low pressure and high temperature (B) Low pressure and low temperature (C) Low temperature and high pressure (D) High temperature and high pressure
Last Answer : (C) Low temperature and high pressure
Description : Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and ... increases. (A) Decreases (B) Decreases exponentially (C) Increases (D) Remain constant
Last Answer : (C) Increases
Description : Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to __________ °C. (A) 270 (B) 327 (C) 300 (D) 540
Last Answer : (B) 327
Description : The expression, ∆G = nRT. ln(P2/P1), gives the free energy change (A) With pressure changes at constant temperature (B) Under reversible isothermal volume change (C) During heating of an ideal gas (D) During cooling of an ideal gas
Last Answer : (A) With pressure changes at constant temperature
Description : For an ideal gas, the internal energy depends upon its __________ only. (A) Molecular size (B) Temperature (C) Volume (D) Pressure
Last Answer : (B) Temperature
Description : Entropy of an ideal gas depends upon its (A) Pressure (B) Temperature (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Cvfor an ideal gas (A) Does not depend upon temperature (B) Is independent of pressure only (C) Is independent of volume only (D) Is independent of both pressure and volume
Last Answer : (D) Is independent of both pressure and volume
Description : The heat capacities for the ideal gas state depend upon the (A) Pressure (B) Temperature (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to ... final pressures respectively) (A) Logarithmic (B) Arithmetic (C) Geometric (D) Harmonic
Last Answer : (C) Geometric
Description : Internal energy of an ideal gas (A) Increases with increase in pressure (B) Decreases with increase in temperature (C) Is independent of temperature (D) None of these
Last Answer : D) None of these
Description : Pick out the wrong statement. (A) Trouton's ratio of non-polar liquids is calculated using Kistyakowsky equation (B) Thermal efficiency of a Carnot engine is always less than 1 (C) An equation relating pressure, volume and temperature of a gas is called ideal gas equation (D) None of these
Last Answer : (C) An equation relating pressure, volume and temperature of a gas is called ideal gas equation
Description : Fugacity and pressure are numerically equal, when the gas is (A) In standard state (B) At high pressure (C) At low temperature (D) In ideal state
Last Answer : (D) In ideal state
Description : The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of (A) T (B) T and P (C) T, P and Z (D) T and Z
Last Answer : (B) T and P
Description : The internal energy of an ideal gas is a function of its __________ only. (A) Molecular size (B) Volume (C) Pressure (D) Temperature
Last Answer : (D) Temperature
Description : 1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be (A) 35 K (B) 174 K (C) 274 K (D) 154 K
Last Answer : (C) 274 K
Description : Assume that the speed (v) of sound in air depends upon the pressure (P) and density (ρ) of air, then use dimensional analysis to obtain
Last Answer : Assume that the speed (v) of sound in air depends upon the pressure (P) and density (ρ) ... analysis to obtain an expression for the speed of sound.
Description : Mercury is an ideal barometric fluid mainly due to its (A) High density (B) Low compressibility (C) Low capillary action (D) Very low vapor pressure
Last Answer : (D) Very low vapor pressure
Description : An ideal coolant for a nuclear reactor should (A) Be a good absorber of neutrons (B) Be capable of attaining high temperature, only when it is pressurised (C) Have high density, but low heat transfer co-efficient (D) Be free from radiation damage and non-corrosive
Last Answer : (D) Be free from radiation damage and non-corrosive
Description : For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary (A) Directly as square of gas density (B) Directly as gas density (C) Directly as square root of gas density (D) Inversely as gas density
Last Answer : (B) Directly as gas density
Description : If the Kelvin temperature of an ideal gas is doubled, what happens to the rms speed of the molecules in the gas? a. it increases by a factor of square root of 2 b. it increases by a factor of 2 c. it increases by factor of 4 d. none of the above
Last Answer : it increases by a factor of square root of 2
Description : The distribution of particle speeds in an ideal gas at a given temperature. a. velocity of propagation b. escape velocity c. Maxwell speed Distribution d. terminal velocity
Last Answer : Maxwell speed Distribution