Molecular diffusion - Quiz
A) The chemical reaction of particles B) The diffusion of a large number of particles C) The diffusion of a single particle D) The motion of a fluid in a pipe
A) It involves repulsive interactions only B) It only occurs in gases C) It refers to the diffusion of a single particle D) It requires high concentration
A) Particles always repel each other B) Interactions between all components are identical C) The particles are larger than the solvent molecules D) The diffusion coefficient increases with concentration
A) It decreases as concentration increases B) It is independent of particle concentration C) It increases as concentration increases D) It is dependent on concentration
A) It becomes zero B) It tends to increase as concentration increases C) It remains constant D) It tends to decrease as concentration increases
A) It makes the diffusion coefficient constant B) It tends to decrease as concentration increases C) It causes precipitation D) It tends to increase as concentration increases
A) They coalesce and form clusters B) They move faster C) They become a gas D) The diffusion coefficient becomes zero
A) Brownian motion B) Precipitation C) Ideal mixing D) Evaporation
A) Stagnant fluid or laminar flow B) Solid state only C) Turbulent flow only D) Vacuum only
A) -dCA/dx B) dCA/dx C) dCA/dt D) D * dCA/dx
A) Diffusion is moving in the negative direction B) The temperature is decreasing C) The number of molecules is negative D) Concentration of A decreases as distance x increases
A) The pressure of the gas B) The rate of diffusion NA C) The total number of molecules D) The temperature of the gas
A) Turbulent mixing B) High pressure only C) No bulk motion D) Constant temperature only
A) Only the distance x B) Average molecular velocity C) The volume of the container D) Only the concentration
A) Only the concentration gradient B) Only the fluid viscosity C) Only the container shape D) Temperature and pressure
A) Number of moles per unit area per unit time B) Number of moles per unit volume C) Force per unit area D) Distance per unit time
A) Temperature gradient only B) Average molecular velocity C) Pressure gradient only D) Concentration gradient
A) The pressure is equalized B) Neither dCA/dx nor dCB/dx change with time C) The concentration is zero D) Diffusion stops completely
A) 1.261·10−8 m2·s−1 B) 2.299·10−9 m2·s−1 C) 2.299·10−8 m2·s−1 D) 1.261·10−9 m2·s−1
A) Equilibrium B) High concentration gradient C) Non-equilibrium D) Phase transition
A) Nuclear spin precession phase B) Molecular vibration frequency C) Atomic mass D) Electronic charge
A) 2.299·10−8 m2·s−1 B) 1.261·10−9 m2·s−1 C) 2.299·10−9 m2·s−1 D) 1.261·10−8 m2·s−1
A) Below absolute zero B) Above absolute zero C) Room temperature D) Above 100 degrees Celsius
A) Newton's laws B) Dalton's laws C) Fick's laws D) Hooke's laws
A) Distillation B) Sintering C) Extrusion D) Crystallization
A) Sintering B) Doping C) Catalysis D) Osmosis
A) Liver B) Lungs C) Kidneys D) Stomach
A) Gold B) Lead C) Silver D) Carbon
A) Creation of an energy gradient B) Increase in viscosity C) Separation of phases D) Complete mixing
A) Cleaning B) Soldering C) Doping D) Etching
A) Amino acids B) Cell walls C) Large proteins D) Complex carbohydrates
A) Cyclic B) Reversible C) Irreversible D) Equilibrium-based
A) Landau-Lifshitz fluctuating hydrodynamics B) Quantum electrodynamics C) General relativity D) Newtonian mechanics
A) Chemical bond creation B) Fluctuations C) External heat sources D) Gravitational forces
A) When the system is cold B) When the system is large C) When the system is at equilibrium D) Locally in quasi-steady states
A) PA = CA + RT B) PA = CA / RT C) PA = CA - RT D) PA = CART
A) DAB = DBA B) DAB = 2DBA C) DAB = DBA / 2 D) DAB = -DBA
A) The gas is at zero temperature B) The gas is at high pressure C) The gas is incompressible D) The gas behaves ideally |
Created with That Quiz —
where test making and test taking are made easy for math and other subject areas.