Answer : B) most colloids appear cloudy or opaque unless very dilute
In colloids the particle size of the dispersed phase ranges from 1 nanometer to 1 micrometer. So statement A is false
The dispersion medium of a colloid can be solid or a gas also.Therefore the statement C is false
Colloids do scatter light.This phenomenon is known as Tyndall effect.Hence the statement D is false
which statement is true concerning colloids? A) colloid particles are smaller than 5 nm in diameter...
Which of the following is a true statement concerning normality? a. Normality can be universally defined. b. Normality must be defined on an individual basis. c. Normality must be defined within a particular historical-cultural context. d. Definitions of normality change very little across time and culture, but they do change. Which of the following is a true statement concerning normality? a. Normality can be universally defined. b. Normality must be defined on an individual basis. c. Normality must be defined...
Which of the following statements are true about the eye? (There may be more than one correct choice.)A: When focusing on a very distant object, the lens is curved the most.B: When focusing on a nearby object, the lens is curved the most.C: Most of the bending of light is accomplished by the lens.D: Most of the bending of light is accomplished by the cornea.E: Most of the focusing is due to variations in the diameter of the pupil.
1) Which statement concerning the structure of the atom is correct A) Protons and Neutrons have most of the mass and occupy C) Electron have most of the mass and occupy very little of the volume of the atom B) Electron have most of the mass and occupy most of the volume of the atom most of the volwne of D) Protons and Neutrons have most of the mass but occupy very little of the volume of the atom 2)...
Which statement is false? 27- (A) protons are positively charged particles (B) electrons are negatively charged particles (C) the mass of a proton is greater than the mass of an electron (D) some elements have a neutral nucleus The correct name of the compound having the formula HgS is: (A) mercury(II) sulfide (B) mercury sulfite 28. (C) mercury sulfate (D) mercury(U) sulfide 29. The correct name of the compound having the formula NayPOs is (A) trisodium phosphate (B) sodium(IID phosphate...
5. The following statements related to classical particles, bosons and fermions are true a. Their spin states do not matter for the distinction. b. fermions have half integer spin. c. All are indistinguishable. d. None are indistinguishable. e. Only classical particles can, in principle, be distinguished from each other. f. Classical particles are always spin 1. 6. The pressures of gases at the same temperature and density made of classical particles, fermions or bosons have these characteristics a. The pressure...
7 Which of these is a true statement concerning independent agencies? a. Independent agencies vary greatly in size. b. Any agency ruling can be challenged in court. c. Setting up an agency requires following clear guidelines. d. Independent agencies are housed within cabinet departments. 8 Aciear chain of command with all employees knowing who their supervisors are as well as whom they are responsible for is an example of a(n) merit. True False 9 Which of the following is an example of a government agency designed to serve a distinct clientele group? a....
Which of the following statement of IRR analysis is TRUE? A. A project can only have one IRR. B. If a project has two IRR, then we will accept the project when the required rate of return is smaller than both IRR. C. When evaluating mutually exclusive projects, the project with highest IRR also has the highest NPV. D. When calculating IRR of a project, we need both cash flows and required rate of return of the project. E. For...
1. Which of the following statements is true? Please indicate all true statements as there are multiple, and explain why. a) Non-precursors refer to molecules which do not absorb visible light from the sun. b) CO emissions are highest when the A/F ratio is close to the stoichiometric ratio. c) Lean A/F ratios decrease NO emissions. d) Ozone concentrations are typically higher in the summer than winter. e) Carbon monoxide levels typically would be higher during the morning hours in...
D Question 2 1 pts Which statement(s) concerning the reaction is/are true? 2A) A2(g) +B2(g) K-29x 10-85 There are fewer moles of reactants than products at equilibrium, because the equilibrium constant is small. There are more moles of reactants than products at equilibrium, because the equilibrium constant is large. There are near equal amounts of reactants and products at equilibrium because the equilibrium constant is close to 1 There are more moles of reactants than products at equilibrium, because the...
1) Choose true (T) or false (F) to the following statements: a) Light is a shower of protons b) Light is a type of energy embodied in electric and magnetic fields c) The speed of light in vacuum is 3.00 x 108 m/s d) The speed of light in vacuum is 3.00 x 108 km/s 2) Choose the correct statement a) We can characterize a wave only by its amplitude b) Electric and magnetic...