QUESTION 53 The United States relies upon coal as its primary energy source. O T
ID: 705557 • Letter: Q
Question
QUESTION 53 The United States relies upon coal as its primary energy source. O True False QUESTION 54 A mole of any gaseous species occupies 22.4 L at standard temperature and pressure. O True O False QUESTION 55 The phase transition between solid and gas phases is known as: o sublimation O vaporization O condensation O fusion QUESTION 56 Match following terms with the descriptions. Occurs evenly over a large portion of the surface area of a metal A. uniform corrosion B. galvanic corrosion occurs when two different metals contact each other in the presence of an appropriate electrolyte C. crevice corrosion D. corrosion occurs when two pieces of metal touch each other, leaving a small gap or crevice between the metals. occurs as a degradation of metals by chemical reaction with the environment.Explanation / Answer
Q53. Correct answer is FALSE
Q54. Correct answer is TRUE
Q55. Correct answer is Sublimation
Q56. occurs evenly over a large portion of the surface are of a metal : A. uniform corrosion
occurs when two different metals contact each other in the presence of an appropriate electrolyte : B. galvanic corrosion
occurs when two pieces of metal touch each other, leaving a small gap or crevice between the metals : C. crevice corrosion
occurs as a degradation of metals by chemical reaction with the environment : D. corrosion
Explanation :
Q53. The primary energy source for US is natural gas (33%) whereas coal comes at third after petroleum
Q54. At standard temperature (0oC = 273K) and standard pressure (1 atm), volume of any gaseous species = 22.4 Litres
Q55. Sublimation is the process in which a material changes from solid phase/state to a gas phase/state without passing through the intermediate liquid state.