Day 1 (additional) Flashcards by Aira Manalo

Which of the following is unsaturated fatty acid?

Lauric Acid
Myristic Acid
Oleic Acid
Palmitic Acid

Oleic Acid

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Ozonolysis of cyclohexene produces

Adipic acid

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Recording Soectrophotometers sometimes operate with feedback loops that vary the power of the reference beam until it matches the power of the beam through the sample. This mode of operation

a. Eliminates the need for a continuous source
b. Require two monochromators
c. eliminates the need for non-absorbing solvents
d. makes the detector to a null device, with the result that nonlinear response to a radiant power would not be deleterious

d. makes the detector to a null device, with the result that nonlinear response to a radiant power would not be deleterious

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The amount of chlorine available in water after disinfection is called

Residual Chlorine

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Which of the following is a covalent oxide
-BeO
-MgO
-K2O
-Rb2O

BeO

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Conductance measurements at infinite dilution will be valid for the determination of the solubility of difficulty soluble salts and saturation point because

a. They have very low concentrationd at their saturation point
b. They conduct minimal current
c. at infinite dilution the concentration cannot be achieved
d. they are strong electrolytes

a. They have very low concentrations at their saturation point

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Refers to the uptake and translocation of metal contaminants in the soil by plant roots into the above ground portion of the plants

phytoextraction

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Which of the following is not a hexose?

a. Ribose
b. Fructose
c. Altrose
d. Mannosr

a. Ribose

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Vinylbenzene is also known as

Styrene

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Microorganisms that use carbon dioxide as their carbon source

photo-autotrophs

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What sequence of processes must be done to obtain m-nitrotoluene?

Nitration then Alkylation

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One of these statements is not correct for ideal gases

a. The volume occupied by the gas is negligible compared to the volume of the containing vessel
b. the product of PV is a constant
c. the ratio of density/pressure is a constant at a given temperature
d. PV/T is a constant for a known quantity of a gas

b. the product of PV is a constant

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Which of the following might be used as an electrode?

a. a stick
b. a nail
c. a glass rod
d. a soda straw

b. a nail

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Addition of Grignard Reagent to ketones results in the formation of ________ alcohol.

Dihydric

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The reaction of alkylhalide and an alkoxide to produce ether is called

Williamson synthesis

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The process in petroleum refining that increases the yield of the most useful fractions is

Cracking

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Which of the following organisms are considered coencytic?

a. protozoa
b. algae
c. molds
d. fungi

c. molds

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All of the following processes will produce a ketone EXCEPT

a. Hydration of alkynes
b. Ozonolysis of alkenes
c. Friedel-Crafts alkylation
d. Reduction of alcohols with NaBH4

c. Friedel-Crafts Alkylation

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Which of the following is a protein?

a. collagen
b. enzymes
c. hemoglobin
d. all of these

d. all of these

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Basic Amino Acid

a. lysine
b. Arginine
c. Histidine
d. all of these

d. All of these

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Part of the nutrient cycles in which chemical nutrients reside in the soil, watet, or air

environmental phase

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A visible concentrated growth of algae or other algae or other aquatic life/plants is called

bloom

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The ________ is a global undertaking on global warming and greenhouse gases

Kyoto Protocol

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Chemicals which are trested by the manufacturer showing 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. all of these

The Compound CFCl3 is used as a/an

Refrigerant

The oxidatuoh state of oxygen is usually -2, except in peroxides, it is -1. Which of the following compounds is peroxide? a. KO2 b. Na2O2 c. H2O d. BaO

b. Na2O2

The current DENR secretary

Maria Antonia Luzo-Lozayga

An increase in the temperature of the reactants causes an increase in the rate of reaction. The best explanation is: As the temperature increases, a. the concentration of reactants increases b. the activation energy decreases c. the collision frequency increases d. the fraction of collisions with total kinetic energy > Ea increases

d. the fraction of collisions with total kinetic energy > Ea increases

Basic Properties are characteristic if all alkaline earth metal oxides except one. Its formula is BeO MgO SO2 B2O3

BeO

Two liquids form a solution and release a certain amount of heat. How does the pressure above the solution compare to that predicted by Raoult's Law? a. It will be the same b. It will be greater c. It will be smaller d. It will show positive deviation

c. It will be smaller

The method of standard addition compensates for matrix effects provided a. the addition does not dilute the sample appreciably and does not itself introduce quantities of interfering substances b. the addition dilutes the sample enough that the concentrations of interfering substances are lowered to neglible values c. the addition contains none of the substance being determined d. the addition contains a large enough quantity of some substance to a swamp out sample variations

a. the addition does not dilute the sample appreciably and does not itself introduce quantities of interfering substances

The temperature at which a real gas obeys the ideal gas law over an appreciable pressure range

Boyle Temperature

Chopping the source beam in conjuction with the use of a tuned AC amplifier in an atomic absorption spectrophotometer accomplishes the following a. a recording potentiometer can be used instead of a voltmeter for the readout b. a less sensitive detector can be ysed instead of the usual photomultiplier tube c. a cooler can be used without decreasing the population of ground-state atons d. radiation emitted by excited atoms in the flame will bit interfere with the absorbance measurement

d. radiation emitted by excited atoms in the flame will bit interfere with the absorbance measurement

Which if the following is not a correct element-precipitating agent pair? Cl-AgNO3 Mg-(NH4)2HPO4 Al-HCl Zn-H2S

Al-HCl

For a faced-centered cubic unit cell, each corner contributes _____ lattice points to the unit cell

1/8

The reagent that will yield diol from a given alkene: a. Hot, acidic, KMnO4 b. O3, Zn, and H2O c. OsO4 in NaHSO4 d. H+ / H2O

c. OsO4 in NaHSO4

A genie is willing to grant you any wish if you can pick which of his carbon functional group would boil second to the last. Choices: Alcohol, ether, ester, and carboxylic acid. What would you choose to get a wish come true?

Alcohol

Butanol is _____ volatile than diethyl ether since it could gorm stronger IMFA through _______

Less, H-bonding

Which functional grouo/s do not react through electrophilic addition? a. Alkanes b. Alkenes c. Alkynes d. None of these

a. Alkanes

Reaction of acetone with methyl magnesium bromide, followed by protonation produces a:

Tertiary Alcohol

Which among the following statements about covalent bonds is/are correct? a. Sigma bonds possess lower energy than pi bonds, due to its hybridization b. sp3-hybridized MO's typically tetrahedral electronic geometry c. Tertiary carbocations are relatively stable, and more easily formed than secondary carbocations d. All of the above

D. All of the above

Which among the following aromatic compounds is more reactive than benzene towards Aromatic substitution reactions? a. Chlorobenzene b. Nitrogenzene c. Phenyl ethanoate d. Ethyl benzene

c. Phenyl Ethanoate

Which among the following materials is most reactive towards SN2 reactions? a, 2-chloro-2-methyl propane b. 2-chloro propane c. 1-chloro propane d. All of the choices above

c. 1-chloro propane

administrative order issued by DENR includes "navigable waters" as one of its classification

DAO 2016-08

Which persistant organic pollutant included in the initial list of the 12 POPs under stockholm convention is not considered as a pesticide? a. Chlordane b. Dieldrin c. Heptachlo d. Hexachlorobenzene

d. Hexachlorobenzene

Esterification can be achieved by reactant the following pairs of reagent: a. Alocohol and carboxylic acid b. Alcohol and acid anhydride c. Alcohol and Acyl Halide d. All of these

d. All of these

Trace Metal which causes disintegration of the bones or more commonly called itai-itai disease

composition of acid rain

nitric acid and sulfuric acid

In titration of weak acid with a strong base, which of the following is the best indicator to be used? a. Bromcresol green b. Methyl orange c. Methyl red d. Phenolphthalein

d. Phenolphthalein

Biochemical compounds are either hydrophobic, hydrophilic or ampiphatic. Classify the following compounds: glucose, stearic acid, soaps, fatty acids

hydrophilic, ampiphatic, ampiphatic, hydrophobic

Taurine, a beta amino acid belongs to the acidic group of:

-SO2OH

trans-2-pentene and Cyclopentane are ________ isomers

constitutional

The millenium prize problems consists of seven problems in mathematics that wete stated by the clay mathematics institute. You want to become the seconr person to solve one of these problems. What is the first millenium prize problem solved?

Poincaré Conjecture

Which of the following has the highest MCL: Xylene, Benzene, Lindane, Heptachlor

Xylene

Arrange the following in terms of increasing toxicity: 1: heptachlor 2: Dieldrin 3: DDT 4: As 5: Chromium

3, 1, 4, 2, 5

most abundant by MASS on earth

Iron

Thunderbolts and lightning, very, very, frightening me. When lightning strikes sand, it fuses grains to create a small glass-like tube. what is the name of this compund?

Fulgurite

He established law of constant proportions, concept of allotropy, discovered cerium and selenium, and the vital force theory

Jöns Jacob Berzelius

The lack of this enzyme is responsible for Asian flush when drinking alcohol

Aldehyde dehydrogenase 2