Conceptuals Flashcards
(Phychem) Which condition can the air inside an air balloon be brought into a more ideal condition? a. Reducing the radius of the balloon b. increasing the release of flames c. adding extra weight it carries d. none if the above
b (More flames = higher temp = higher spacing between molecules = less interaction)
(Phychem)Which is the possible unit of fugacity? A. J/N B. Wm^3 C. mmHg D. Unitless
C. mmHg(actual pressure)
(Phychem)Which of the following gases is the closest to ideality at a certain condition? A. Hydrogen B. Oxygen C. Formic Acid D. Xenon
A. Hydrogen (lowest Molar mass, lowest IMFA)
(Envi)Type of bacteria involved in denitrification. A. Cyanobacteria B. Rhizobium C. Aerobic Bacteria D. Anaerobic Bacteria
D
(Phychem)There are three identical flasks containing hydrogen, oxygen, and neon at SATP. Which of the following statements is true?
A. Neon exerts the greatest pressure.
B. Hydrogen occupies the least volume.
C. Oxygen contains the greatest number of particles
D. None of the above
D. None of the Above
(Phychem)Which condition does not indicate a predomination of repulsive forces? A. The value of Z is 1.0053 B. The value of φ is 1.0075 C. The value of μ_JT is 0.24 K/atm D. None of the above
C. The value of μ_JT is 0.24 K/atmAttraction = favors compression = μ_JT>0 = Z<1 = φ<1Repulsion = favors expansion= μ_JT<0 = Z>1 = φ>1Ideal = μ_JT=0 ; Z=1 ; φ=1
(Phychem)It is an intrinsic property of the system, functionally related to its characteristic coordinates at equilibrium. A. Vapor Pressure B. Heat C. Internal Energy D. Work
C. Internal Energy
(Phychem)The entropy and enthalpy changes of the system are 160 J/K and 178.3 kJ, respectively. Which of the following statements is true?
A. The process is isentropic
B. The process is exothermic
C. The process is always spontaneous
D. The process is spontaneous at T>1115 K
D. The process is spontaneous at T>1115 K
(Phychem)Which of the following is equivalent to (δU/δS)_V ? A. enthalpy B. temperature C. Pressure D. heat
B. Temperature
(Phychem)Which is equivalent to (δS/δT)_P * (δT/δP)_S? A. (δV/δT)_P B. -(δV/δT)_P C. (δP/δS)_T D. -(δP/δS)_T
A. (δV/δT)_P
(Phychem)Which of the following is true for a spontaneous process? A. ΔG>0, K>1 B. ΔG>0, K<1 C. ΔG<0, K>1 D. ΔG<0, K<1
C. ΔG<0, K>1
(Phychem)What are the signs of ΔG, ΔH, and ΔS of the vaporization of water? A. +,-,+ B. +,-,0 C. -,+,+ D. -, +, 0
C. -,+,+SpontaneousEndothermicIncrease in entropy (liquid to gas)
(Phychem)For a generic cubic equation, the middle root is \_\_\_\_\_ A. liquid-like B. vapor-like C. liquid-vapor-like D. insignificant
D.
(Phychem)How many degree/s of freedom are there in this gaseous reaction system? 3H2 + N2 <=> 2NH3 A. 0 B. 1 C. 2 D. 3
D.C = 3 components - 1 = 2P = 1 phase = 1DF = 2-1+2 = 3
(Phychem)What is the maximum number of phases that can be at equilibrium with each other in a two-component mixture? A. 2 B. 3 C. 4 D. 5
C. 4C = 2DF = 00 = 2-P+2P = 4
(CPI) producer gas consists mainly of A. CO, CO2, N2, H2 B. CO, H2 C. H2, CH4 D. C2H2, CO2, H2
A
(CPI) economics of "solvay process" depends upon the efficiency of A. carbonating tower B. ammonia recovery C. ammonia recovery and size of plant D. ammoniation of salt solution
C
(Phychem)
which of the following statement is correct about ideal gas?
A. the pressure of the gas is equal to the total kinetic energy of the molecules in a unit volume of the gas
B. the product of pressure and volume of the gas is always constant
C. the average kinetic energy of molecule of the gas is proportional to its absolute temperature
D. the average kinetic energy of molecule of the gas is proportional to the square root of its absolute temperature
C
(Phychem) for ideal gas possessing only translational energy the following relationships are valid except A. Cp =2.5 R B. Cp=Cv - R C. Cv = 1.5R D. Cp/Cv = 1.67
B
(Phychem) which of the following exist as gas at room temperature? A. Br2 B. Ga C. I2 D. none of these
D.
(Phychem) the simplest state of matter is A. solid B. liquid C. gas D. plasma
C
(Phychem) if a given gas has a compressibility factor of Z>1 this means that \_\_\_\_\_ exist between the molecules of gases A. attractive forces B. repulsive forces C. negligible forces of attraction D. negligible repulsive forces
B
(Phychem) fluids whose viscosity increases as shear rate increases A. dilatant B. pseudoplastic C. newtonian D. bingham plastic
A
(Phychem) fluids whose viscosity increases with time at constant shear rate A. inviscid B. rheopectic C. thixotropic D. pascalian
B
(Phychem) one colligative properties of solutions is its freezing point depression which observation will show that the solute is an electrolyte? ΔTf/m \_\_\_\_\_ A. is not a constant B. is not Kf C. is less than Kf D. is greater than Kf
D
(Phychem) which of these 0.1 m solutions will give the highest boiling point at 1 atm? A. table salt solution B. sugar solution C. barium chloride D. potassium chloride
C
(Phychem) all the half-cell potential (ε°) use the\_\_\_\_ as the reference A. hydrogen electrode B. oxygen half-cell C. carbon half-cell D. arbitrarily net zero point
A
(Phychem) an electrochemical cell in which chemical reaction is forced to occur by the application of an outside source of energy is A. galvanic B. electrolytic C. electrical D. chemical
B
(Phychem) the more negative the value of ε° the more likely the reaction is to proceed from A. left to right B. right to left C. either way D. can't be determined
B
(Phychem)
which of the following statements about colligative properties is TRUE?
A. both vapor pressure and freezing point increase when a nonvolatile solute is added to a solvent
B. both freezing point and boiling point increase when the nonvolatile solute is added to a solvent
C. both vapor pressure and boiling point decrease when a nonvolatile solute is added to a solvent
D. colligative properties depend only upon the number of solute particles in a solution and not upon their identity
D
(Phychem) the vapor pressure of a liquid A. always increases with temperature B. always decreases with temperature C. is independent of temperature D. none of these
A
(Phychem) the lore relating the solubility of the gas to its pressure is called A. Raoult's law B. distribution law C. henry's law D. Arrhenius law
C
(Phychem)
when gaseous ammonia is dissolved in water the resulting solution does not obey henry’s law. which of the following best explains why this solution does not obey henry’s law?
A. all of the ammonia that initially dissolves in water rapidly escapes from the solution because ammonia is a gas at room temperature
B. ammonia reacts with the solvent to produce ammonium and hydroxide ions
C. ammonia is not soluble in water because it is a nonpolar molecule
D. the hydrogen bonding between ammonia molecules is so strong that ammonia cannot be dissolved in water
B
(Phychem) for the process C(s) + O2 (g) <=> CO2(g), it is found that ΔG at a given temperature is -10 kcal/mol. which statement is correct at this temperature? A. the system is in equilibrium B. co2 will be formed spontaneously C. co2 will decompose spontaneously D. the process will proceed reversibly
B
(Phychem)
for a chemical reaction in a state of equilibrium a decrease in temperature will
A favor the reaction that is exothermic
B. favor the reaction that is endothermic
C. have no effect on the system
D. increase the equilibrium constant of the system
A
(Phychem) in a chemical reaction, equilibrium has been established when the A. opposing reactions ceases B. concentrations are equal C. reaction ceases to generate heat D. net velocities of reactions is zero
D
(Heat Transfer)
which of the following statements is correct
A. planck’s law relates the monochromatic emissive power at a certain temperature and certain wavelength
B. the wavelength at which the blackbody emissive power is a maximum is derived from integrating planck’s law
C. the total amount of radiation per unit area leaving a surface with a certain temperature overall wavelengths is derived from differentiating planck’s law
D. none of the above
A
(Heat Transfer) which of the following is not a property of a black body A. α = 1.0 B. ε = 1.0 C. ρ = 0 D. k = 0
D. k should not be zero (thermal conductivity)
α (absorptivity)
ε (emissivity)
ρ (Reflectivity)
(Heat Transfer) in the magnetic spectrum in the wavelength range of 10^-13 to 10^-10 m is A. cosmic ray B. gamma ray C. thermal radiation D. visible radiation
B
short wavelengths=higher energy
(GenInorgChem) who discovered x-rays ? A. goldstein B. becquerel C. Curie D. Roentgen
D. Roentgen
(GenInorgChem) what is the color of the flame emitted by copper ions A. red B. brown C. purple D. green
D K-purple Ca-Red Na-yellow Ba-Yellow Green Cu - Turquoise (Green) Rb-Red Cesium-Blue Lithium-Red
(GenInorgChem) which of the following is an allowed set of quantum numbers (n, l, ml, ms)? A. 3, 4, 2, +1/2 B. 2, 1, -2, +1/2 C. 1, -1, 0, -1/2 D. 4, 3, -2, -1/2
D
(GenInorgChem) what is the valence electron configuration of tellurium? A. 5p4 B. 5s2 5p4 C. 6p4 D. 6s2 6p4
B
(GenInorgChem) which of the following is the correct arrangement of increasing affinity of electrons A. (lowest)Rb-Sr-Se-Kr (highest) B. (lowest) Kr-Se-Sr-Rb (highest) C. (lowest) Kr-Rb-Sr-Se (highest) D. (lowest) Se-Sr-Rb-Kr (highest)
C
(GenInorgChem) which of the following species is the largest A. iodine atom B. iodide C. bromine atom D. bromide
B
(GenInorgChem)
which of the following is the incorrect correspondence
A. alkali metals: naturally found in salts
B. noble gases: most are unreactive
C. halogen most are in diatomic form
D. pnictogens have three valence electrons
D
(GenInorgChem) which of the following is the second most abundant element in the earth's crust? A. Si B. O C. H D. Ca
A
O>Si>Al>Fe>Mg>Ca>K>Na (Earth’s Crust)
Fe>O>Si>Mg>Ni>S>Ca>Al (Entire Earth)
(GenInorgChem) what is the third most abundant element in the human body A. Si B. O C. H D. Ca
C
(GenInorgChem) what is the third most abundant substance in dry air A. carbon monoxide B. argon C. carbon dioxide D. methane
B
(GenInorgChem) a certain compound is found to be electrically conductive when in aqueous state but not in its solid state. upon heating in an evaporating dish there is no distinguishable change. which of the following is the most probable identity of the compound A. metallic B. ionic C. covalent molecular D. covalent network
B
(GenInorgChem) what is the name of the acid with a chemical formula of HN3? A. hydrazoic acid B. hydronitric acid C. hydroazidic acid D. hydrazic acid
A
(GenInorgChem) brucite is the mineral form of which compound? A. lead oxide B. sodium nitride C. zinc chloride D. magnesium hydroxide
D
(GenInorgChem) what is the most common commercial form of manganese sulfate? A. trihydrate B. tetrahydrate C. pentahydrate D. hexahydrate
B
(GenInorgChem)
which of the following is false about chemical bonding?
A. different types have different strengths
B. it needs a certain amount of energy to be broken
C. it is the interaction of the molecules with one another
D. none of the above
C
(GenInorgChem) what is the most thermal and corrosion resistant type of stainless steel? A. martensitic B. Ferritic C.Austenitic D. duplex
C
Perry pp 25-30
(GenInorgChem) what is the ratio of the mass of earth and moon A. 69 B. 81 C. 93 D. 109
B
5.972(10)^24/7.35(10)^22
(GenInorgChem) which functional group has the largest bond energy A. alkene B. alkyne C. carbonyl D. ether
B
(GenInorgChem) what is the formal charge of chlorine atom in carbon tetrachloride? A. 0 B. +1 C. -1 D. +7
A
(GenInorgChem) Which of the following molecular geometry is always polar A. trigonal bipyramidal B. square planar C. trigonal planar D. seesaw
D
(GenInorgChem) which of the following has the lowest bond angle? A. methane B. carbon dioxide C. water D. ammonia
C
(GenInorgChem) which will have the strongest interaction with alcohol? A. benzene B. cyclohexane C. acetic acid D. diethyl ether
C
(GenInorgChem)
Which of the following is true given the two organic compounds?
I. CH3(CH2)8(CH3)
II. CH3(CH2)7OCH3
A. I has higher boiling point than II
B. I is more volatile than II
C. II has lower viscosity than I
D. II needs less energy to vaporize than I
B
(GenInorgChem) which of the following is the most probable solute-solvent pair? A. ethanol-kerosene B. isooctane-heptane C. benzene-water D. Na-Br diesel
B
(GenInorgChem) arrange the proton neutron and electron in increasing mass A. p-e-n B. e-p-n C. e-n-p D. n-e-p
B
(GenInorgChem) the constant known as the fundamental number of hydrogen is the A. Rydberg constant B. planck's constant C. fine-structure constan D. balmer constant
D.
(GenInorgChem)
in rutherford’s experiment, which of the following is true?
A. the proton is evenly distributed in the nucleus of an atom
B. the atom is almost an empty space
C. the nucleus contains proton neutron and electron
D. all of these
B
(GenInorgChem) the sum of the number of protons, neutrons and electrons of a zinc ion, Zn+2 is A. 94 B. 92 C. 95 D. 93
D p = 30 e = 28 n = 65.41- 30 = 35.41 round to 35 35+28+30=93
(GenInorgChem) the region in space where an electron is most likely to be found is called A. orbital B. energy level C. shell D. nucleus
A
(GenInorgChem) atoms with the same atomic number but different mass number is called A. isobars B. isotopes C. isotherms D. isoelectronic
B
(GenInorgChem) the quantum number that has an allowable value of 0, 1, 2, etc is the A. magnetic quantum number B. spin quantum number C. angular momentum quantum D. number principal quantum number
C
(GenInorgChem) it states that no two atoms will have the same set of quantum numbers A. heisenberg uncertainty principle B. pauli's exclusion principle C. Aufbau building up principle D. hund's rule of multiplicity
B
(GenInorgChem) what is the maximum number of electrons in an atom that can have the quantum number n = 2, ms = -1/2 ? A. 8 B. 6 C. 1 D. 4
D
2n^2/2 = 4 (since spin is -1/2 only)
(GenInorgChem) which of the following properties do not depend on the electronic configuration of the atoms A. physical B. chemical C. nuclear D. none of the above
C
(GenInorgChem) in what group of the periodic table is the element with the following electron configuration? [Ar] 4s^2 3d^10 4p^3 A. 1A B. 2A C. 3A D. 5A
D
(GenInorgChem) which of the following pairs are isoelectronic? A. mn+2 and Ar B. Zn+2 and Cu+2 C. S-2 and Cl-1 D. Na+ and Cl-
C
[Ar]
(GenInorgChem) the change in energy when an electron is accepted by a gaseous atom to form an anion A. electronegativity B. electron affinity C. ionization energy D. activation energy
B
(GenInorgChem) which of the following halogens is the most electronegative A. F B. Cl C. Br D. I
A
(GenInorgChem) among the members of the chalcogen family which is the most non-metallic A. sulfur B. selenium C. tellurium D. oxygen
D
(GenInorgChem) arrange the following in increasing ionization energy C(1) Na(2) Mg(3) B(4) N(5) A. 41532 B. 51432 C. 23415 D. 23514
C
(GenInorgChem) the theory that states that bonding is caused by overlapping of two atomic orbitals A. valence bond theory B. molecular orbital theory C. vital force theory D. valence shell electron pair repulsion
A
(GenInorgChem) it pertains to a single bond, double bond triple bond, and those intermediate between single and double bonds etc A. bond order B. bond length C. bond strength D. bond degree
A
(GenInorgChem) which of the following molecules compounds is formed by covalent bonds A. LiF B. MgO C. ZnS D. BeCl2
D
(GenInorgChem) a compound whose molecules are not associated by hydrogen bonding is A. CH3CH2OH B. (CH3)2NH C. HCOOH D. (CH3)3COCH3
D
(GenInorgChem) type of equilibrium that exists between similar phases is called A. physical equilibria B. homogeneous equilibria C. chemical equilibria D. heterogeneous equilibria
B
(GenInorgChem) which of the following equilibrium system will have its Kp equal to its Kc A. 2NO(g) + Br2(g) <=> 2NOBr(g) B. CO(g) + Cl2(g) <=> COCl2(g) C. H2(g) + I2(g) <=> 2HI(g) D. N2(g) +3H2(g) <=> 2NH3(g)
C
(GenInorgChem) oxalic acid + sodium hydroxide --- \_\_\_\_ + H2O A. Na2CO3 B. NaC2H3O2 C. NaCHO D. Na2C2O4
D
(GenInorgChem) which of the following is an acidic oxide A. MgO B. SO2 C. Na2O D. CaO
B
nonmetallic oxide
(GenInorgChem) which of the following substances in aqeous solution of the same concentration will have the highest boiling point elevation A. potassium chloride B. sodium sulfate C. acetic acid D. sodium chloride
B. Na2SO4
yields 3 ions
(GenInorgChem) Ra-226 decays by alpha emission. what is its decay product A. 228,87Fr B. 222,86Rn C. 230,90Th D. 226,89Ac
B
(GenInorgChem) If 238,92U undergoes decay and found to produce 234,90Bi, what other particle was emitted A. alpha B. gamma C. positron D. electron
A
(GenInorgChem) it is equivalent to the rate of disintegration of 1 gram of radium A. becquerels B. curie C. gray D. rem
B
(GenInorgChem) which of the following particles cannot be accelerated in a particle accelerator? A. alpha B. electron C. neutron D. proton
C
(GenInorgChem)
proposed the theory of electromagnetism and made connection between light and electromagnetic waves
james clerk maxwell
(GenInorgChem)
coined the term isotope
margaret todd
(GenInorgChem)
discovered that the number of protons in an element determines its atomic number
henry moseley
(GenInorgChem)
determine the charge of an electron through his oil drop experiment
robert millikan
(Analytical Chem) all of the following is used as a hygroscopic material in desiccators except A. CaSO4 B. Mg(ClO4)2 C. P2O5 D. CuSO4
D
(Analytical Chem) analytical methods classified as micro analyses you sample mass ranging from A. less than 1 mg B. 1 to 10 mg C. 10 to 100 mg D. greater than 100 mg
B.
less than 1 mg (ultramicro)
1-10 mg (micro)
10-100 mg (semi-micro)
greater than 100 mg (macro)
(Analytical Chem) chemicals which are tested by the manufacturers show the actual percentages of impurities and labeled on the containers are called A. reagent grade chemicals B. analytical reagent C. certified reagent D. all of these
D
(Analytical Chem)
platinum crucibles can be used for the following processes without significant loss except
A. fusion with sodium carbonate, borax or alkali bifluorides
B. evaporation with hydrofluoric acid
C. ignition of oxides of Ca and Sr
D. heating with sulfides
D
(Analytical Chem) what grade of water as defined by the british standard 3978 is suitable for the determination of trace quantities which can be prepared by the distillation of deionized water A. grade 1 B. grade 2 C. grade 3 D. grade 4
B
(Analytical Chemistry)
the following describes colloidal suspensions form during precipitation except
A. these particles are almost invisible to the naked eye
B. they settle readily from a given solution
C. they’re not easily filtered
D . none of these
B
(Analytical Chem)
which of the following does not describe the correct way to wash precipitates
A. minimum volume of washing liquid must be used to wash the precipitate
B. wash with small portions of washing liquid
C. ionic salts containing common ion must be added to the washing liquid to increase the solubility of the precipitate
D. gelatinous precipitate require more washing than crystalline precipitates
C
(Analytical Chem) it is the expressed as the volume of a solution chemical equivalent to a mass of a solid reagent A. titer B. aliquot C. molarity D. ppm
A
(Analytical Chem) process by which an agglomerated colloid return to its dispersed state during washing due to leaching of electrolyte responsible for its coagulation A. nucleation B. coagulation C. agglomeration D. peptization
D
(Analytical Chem) which of the following aqueous solutions of the same concentration will have the largest pH value at 25 degC A. NH3 B. KCl C. NH4Cl D. NaF
A
(Analytical Chem) which of the following acid base pairs will result in the formation of a buffer solution when titration is done before the equivalence point? A. NaOH-HCl B. KOH-HNO3 C. NH3-HBr D. all of these
C
(Analytical Chem)
which of the following statements is not correct
A. the buffer capacity is always a positive number
B the larger the buffer capacity the more resistant to solution is to pH change
C. in general alkaline buffering capacity is maximum over a pH range so pKb+/-1
D. the acid buffering capacity is maximum at pH equal to pKa
C
(Analytical Chem) the conjugate base of H2PO4 - is A. HPO4 -2 B. PO4 -3 C. H3PO4 D. P2O5
A
(Analytical Chem)
in the standardization of an acid solution with primary standard sodium carbonate, why is it necessary to boil the solution before completing the titration?
A. to eliminate the reaction product carbon dioxide and carbonic acid
B. to destroy the buffering action of the resulting solution due to the presence of carbonic acid and unreacted hydrogen carbonate
C. to achieve a sharper endpoint with methyl red indicator due to the large decrease in pH
D. all of these
D
(Analytical Chem) what is the best basis for choosing the right indicator for a given acid base titration from among the following? A. type of acid B. type of base C. pH at equivalence point D. molarity of the acid or base
C
(Analytical Chem) in the titration of a weak acid with a strong base which of the following is the best indicator to be used A. bromocresol green B. methyl orange C. methyl red D. phenolphthalein
D
(Analytical Chem) process of determining the nitrogen content of organic materials by mixing the sample with powdered copper (II) oxide and ignited to a combustion tube giving CO2, H2O, N2 and small amounts of nitrogen oxides A. Kjeldahl method B. Dumas Method C. winkler method D. Wij's method
B
(Analytical Chem) in the analysis of nitrogen using kjeldahl method which of the following is added to decompose organic matrices present in the sample a. H2SO4 b. HgO C. K2SO4 D. H2O2
D
(Analytical Chem) which of the following is not used as primary standard for the standardization of alkalis solutions? A. HgO B. H2C2O4 C. HSO3NH2 D. C6H5COOH
A
(Analytical Chem) which of the following is not a correct analytical method titrant pair? A. Mohr-AgNO3 B. Fajans-AgNO3 C. Volhard-AgNO3 D. Liebig-AgNO3
C
(Analytical Chem)
in volhard method why is it necessary to carry out titration in acidic solution
A. to prevent precipitation of iron as hydrated oxide
B. to prevent formation of AgSCN precipitate
C. to prevent reduction of halide
D. to prevent precipitation of silver as hydrated oxide
A
(Analytical Chem) which of the following ions is best titrated with edta at minimum ph less than 7 A. Ca2+ B. Sr2+ C. Mg2+ D. Fe3+
D
(Analytical Chem)
which of the following statements is true
A. multidentate chelating agents form weaker complexes with metal ions
B. all metals can be determined with high precision and accuracy using chelometric titration
C. eriochrome black t gives a sharp end point for the titration of calcium
D. calcium-EDTA complex is more stable than magnesium-EDTA complex
D
(Analytical Chem) commonly the analyte in a sample is present in two different oxidation states. Pre-reduction is then necessary before titration. one of the metallic reductors is zinc soaked in a dilute solution of mercuric chloride. this reductor is known as A. walden reductor B. devarda alloy C. lindlars catalyst D. jones redactor
D
(Analytical Chem)
which of the following is false about iodine as an oxidizing agent in titration
A. standard iodine solutions have low smaller electrode potential
B. sensitive and reversible indicators are readily available
C. iodine is very soluble in water and losses are minimal
D. the solution lacks stability requires regular standardization
C
(Analytical Chem) all of the following is used as oxidant in redox titrations except A. KMnO4 B. Cerium (IV) C. K2Cr2O7 D. KI
D
(Analytical Chem) which of the following metal is not reduced by walden reductor A. Cr B. Fe C. Cu D. V
A
(Analytical Chem) which of the following is used as pre oxidant? A. sodium bismuthate B. ammonium peroxydisulfate C. sodium peroxide D. all of these
D
(Envi) The global agreement whose goal is to keep global average temperature 2 degC below the pre-industrial periods and to limit its increase to 1.5 degC. A. Kyoto Protocol B. Paris Agreement C. Stockholm Agreement D. Montreal Protocol
B. Paris Agreement
(Envi) type of bacteria involved in denitrification A. cyanobacteria B. rhizobium C. aerobic bacteria D. anaerobic bacteria
D
(Envi) a condition caused by excessive exposure to silver dust a. argyria b. itai itai disease c. minimata disease d. devon colic
A
(Envi) which of the following pesticides has the highest MCL A. lindane B. heptachlor C. dichloromethane D. benzene
D
maximum contaminant levels, so least toxic
(Envi) the adiabatic lapse rate for a dry atmosphere which may contain water vapor but which has no liquid moisture present in the form of fog, droplets or clouds is approximately a. 1 degC/1000 m b. 10 degC/1000 m c. 100 degC/1000 m d. 1000 degC/1000 m
B
(Envi) the condition of the atmosphere where temperature actually increases with altitude near the ground before it begins to decrease with altitude A. adiabatic B. subadiabatic C. inverted D. superadiabatic
C
(Envi) in which part of the atmosphere is the ozone layer located A. exosphere B. thermosphere C. mesosphere D. stratosphere
D
(Envi)
an act that provides for an ecological solid waste management program in establish the national solid waste management commission
RA 9003
(Envi)
this administrative order classified water bodies into five classes for inland freshwater and four classes for marine and coastal water
DAO 2016-08
(Envi) industrial water supply class 1 used for manufacturing process after treatment is classified as A. Class C B. Class D C. Class B D. Class A
A
(Envi) non recyclable plastic used for plates cups compact disc cases A. PVC B. HDPE C. OTHER D. PS
D
Polystyrene
(Envi) plastic classification number for a non recyclable plastic used for plates cups cd cases A. 2 B. 6 C. 3 D. 7
B. 6 1 - PETE 2 - HDPE 3 - PVC 4 - LDPE 5 - PP 6 - PS 7 - OTHER
(Envi) a facility for recovery of recyclable materials A. material recycling facility B. material recovery facility C.recyclable material facility D. recovery material facility
B
(Envi)
which of the following is correct
A. hazardous wastes pose substantial danger now or in the future to living things only
B. hazardous waste must be handled or disposed with special precautions
C. both a and b
D. none of the above
B
