Day 1 QRC Flashcards by Aira Manalo

Chemical Engineering Law of 2004

RA 9297

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Neutrons are made up of

1 up quark, 2 down quark

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Protons are made up of

2 up quarks, 1 down quark

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Exemptions in the d-block when it comes to valence configuration

Cr, Mo, Cu, Ag

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Chemical Formula of Rochelle’s Salt

KNaC4H6O*4H2O

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The person behind the carbon dating method

William Libby

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Who discovered radioactivity?

Becquerel

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What is the most ideal gas?

Helium

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Half-life of
A. Carbon
B. Rubidium
C. U-238

A. 5730 years
B. 86.2 days
C. 4.5 billion years

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Application of C-14

Carbon dating

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Isotope used for uranium-lead dating

U-238

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What uranium isotope is used for nuclear power generation?

U-235

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What are the appplications of the following isotopes?
I. H-3
II. Co-60
III. I-131
IV. Tl-201
V. Tc-99m

I. Water content in the body
II. Cancer treatments
III. Diagnosis of thyroid defects
IV. Heart scan
V. Brain, Liver, Kidney Scans

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Which of the following is true about the dissolution process?
A. The temperature increases with respect to time then eventually stays constant.
B. The temperature decreases with respect to time then eventually stays constant.
C. The enthalpy of solution is temperature dependent.
D. The enthalpy of solution is pressure dependent.

C. The enthalpy of solution is temperature dependent.

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Which quantum number indicates the number of orbitals in subshells?

magnetic

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Which type of radiation is the least penetrating?

Alpha

Order:
Alpha, Beta, X-ray, Gamma, Neutron

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Ratio of the mass of the moon with respect to the earth?
A. 81
B. 5972
C. 10914
D. 333054

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Ratio of the mass of the sun with respect to the earth?
A. 81
B. 5972
C. 10914
D. 333054

333054

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For all spontaneously occurring processes in an isolated system, which expression best describes dS?
A. dS = dQ/T
B. dS = 0
C. dS > 0
D. dS < 0

dS > 0

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For a reversible equilibrium process in an isolated system, which of the following is the most applicable?
A. dS = dQ/T
B. dS = 0
C. dS > 0
D. dS < 0

dS = 0

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dS of the following systems
I. Universe:
II. Occurring Isolated System:
III. Equilibrium Isolated System:
IV. Closed irreversible System:
V. Closed reversible system:

I. Universe: dS > 0
II. Occurring Isolated System: dS > 0
III. Equilibrium Isolated System: dS = 0
IV. Closed Irreversible System: dS > dQ/T
V. Closed Reversible system: dS = dQ/T

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What will happen if liquid water is immediately transferred into a vacuum container?
A, It will freeze.
B. Nothing will happen.
C. It will decompose.
D. It will vaporize.

D. It will vaporize.

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What is a buckyball?
A. An epoxy resin
B. C60H+++
C. A fullerene
D. Sodium Benzoate

C. A Fullerene

*buckminsterfullerene

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Sum of the average mass of atoms in an ionic compound
A. Atomic Mass
B. Molar Mass
C. Formula Mass
D. Molecular Mass

C. Formula Mass

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Sum of the average mass of atoms in a covalent compound A. Atomic Mass B. Molar Mass C. Formula Mass D. Molecular Mass

D. Molecular Mass

Serendipity is a category used to describe scientific discoveries that occur at the intersection of chance and wisdom, examples of which are discoveries of Teflon, penicillin, and aspartame. Who coined the word “serendipity”?

Horace Walpole

The electrons of metals are free to move in a solid. This explains why ____ A. Metals are unstable. B. Metals can be easily molded. C. Metals have high reflectivity. D. Metals have high conductivity.

Metals have high conductivity.

Who discovered deuterium? A. Priestley B. Rutherford, Oliphant, Hartech C. Cavendish D. Urey

Urey

Who discovered oxygen? A. Priestley B. Rutherford, Oliphant, Hartech C. Cavendish D. Urey

Priestley

Who discovered protium? A. Priestley B. Rutherford, Oliphant, Hartech C. Cavendish D. Urey

Cavendish *protium = Hydrogen

Magnesium reacts with ____ to produce magnesium nitride. A. N2 B. NH3 C. O2 D. NO2

N2 *N2 and NH3 are both correct answers. However, if they are both in the choices, choose N2 because Mg3N2 is the only product in the reaction, whereas reaction with NH3 has a byproduct of Hydrogen

What is the nearest star to the earth except the sun?

Proxima centauri

What is the distance (m) of the most remote normal galaxy to the earth? A. 2x10^22 m B. 1.4x10^26 m C. 4x10^16 m D. 9x10^25 m

9x10^25

Farthest Galaxy and its distance away from the earth

MACS0647-JD 13.3 BLY

Closest galaxy and its distance away from the earth

Canis Major Dwarf 25000 LY

Equation of state for a single component can be any of the following except A. Ideal gas law B. Z = PV/nRT C. Any relationship interrelating 3 or more state functions D. A mathematical expression defining a path between states

A mathematical expression defining a path between states

What is the most used coagulant?

Alum (Aluminum sulfate)

Sub-freezing is a process at which water vapor in air directly turns to ice. At which condition will the process be spontaneous? A. At any temperature B. At high temperature C. At low temperature D. None of the above

At low temperature

What is the rate of evaporation (kg/s) in a 50x20 m swimming pool with water temperature of 20C? The wind is at 25C and 50% relative humidity and blows at 0.5 m/s. A. 0.11 B. 0.025 C. 0.033 D. 0.047

0.047 kg/s

What two elements did Marie Curie discover? A. Radium and Curium B. Radium and Polonium C. Curium and Polonium D. None of the above

Radium and Polonium

Which of the following elements is the most abundant in the human body? A. Ca B. Mg C. K D. I

Ca Abundance of elements in the human body: Hydrogen > Carbon > Oxygen > Ca > Others *nasa periodic table

Who discovered positron? A. Carl Anderson B. James Chadwick C. Wolfgang Pauli D. Murray Gell-man

Carl Anderson

Who discovered neutrino? A. Carl Anderson B. James Chadwick C. Wolfgang Pauli D. Murray Gell-man

Wolfgang Pauli

Who discovered neutron? A. Carl Anderson B. James Chadwick C. Wolfgang Pauli D. Murray Gell-man

James Chadwick

Who discovered quark? A. Carl Anderson B. James Chadwick C. Wolfgang Pauli D. Murray Gell-man

Murray Gell-man

Who theorized that the entropy of a star collapsing into a black hole increases? A. Bose and Einstein B. Hawking and Bekenstein C. Hubble and Webb D. Cooper and Fowler

Hawking and Bekenstein

What is the main purpose of the Solid Waste Management Act? A. To regulate the disposal of hazardous waste B. To regulate the disposal of all types of waste C. To regulate the production of waste D. To regulate the transport of waste

B. To regulate the disposal of all types of waste

What is the average temperature of the moon if the solar radiation currently reaching the earth’s top temperature is 1.34 W/m² and the greenhouse effect of the atmosphere applies, and emissivity is the same for all kinds of electromagnetic waves at no atmosphere? A. 5800C B. 4C C. -12C D. 277C

4C or 277K

One of the major tools of water quality management in rivers is assessing the capability of a stream to absorb a waste load. This is done using the DO sag curve.The following can be derived from the DO sag curve except: A. DO concentration in the river B. Flowrate of oxygen in the river C. Worst conditions in the river D. Oxygen deficit of the river

Flowrate of oxygen in the river

When the meteor hits the atmosphere, the air in front of it compresses incredibly quickly. When a gas is compressed, its temperature rises potentially up to 1600C. This causes the meteor to heat up so much that it glows. In which layer of the atmosphere does this happen? A. Stratosphere B. Troposphere C. Mesosphere D. Thermosphere

Mesosphere

When water is contaminated by these substances, eutrophication occurs in the body of water. A. Sulfates and Potassium B. Phosphorus and Potasssium C. Nitrogen and Phosphorus D. Nitrogen and Sulfates

Nitrogen and Phosphorus

BTEX (benzene, toluene, xylene, ethylbenzene) are contaminants that can pollute an aquifer. From which of the following sources can BTEX contaminants come from? A. gasoline spills B. processing of petroleum products C. burning of wood D. both A and B

Both A and B

In which layer of the atmosphere can the ozone layer be found? A. Stratosphere B. Troposphere C. Mesosphere D. Thermosphere

Stratosphere

Nitrogen-fixing bacteria are important since they convert nitrogen to more usable forms which can be utilized by organisms in the nitrogen cycle. What is the final product produced by nitrogen-fixing bacteria? A. Ammonia B. Nitrite C. Nitrate D. Nitrogen dioxide

Nitrate

Which law states that indigenous cultural communities have the rights to their ancestral lands? A. RA 7942 B. RA 8371 C. RA 11293 B. RA 10657

RA 8371 *or RA 7942, sa boards ay walang RA 8371. Ang answer ay RA 7942 which is the Philippine Mining Act of 1995.

What is the direction of plume in a cold day of December? A. Horizontal B. Upward C. Downward D. Stays the same

Horizontal

A power plant in a college town is burning coal on a cold, clear winter morning at 8:00 AM with a wind speed of 2.6 m/s measured at 30 m elevation and an inversion layer with its base at a height of 697 m. The effective stack height is 30 m. Calculate the distance downwind XL at which the plume released will reach the inversion layer and begin to mix downward. A. 5.8 km B. 8.5 km C. 12.2 km D. 21.2 km

5.8 km

A city of 100,000 people disposes 1.05m^3/s of treated sewage that still has a BODu of 28.0 mg/L and 1.8 mg/L of DO into a river. Upstream from the outfall, the river has a flowrate of 7.08 m^3/s and a velocity of 0.37 m/s. At this point, the BODu and DO in the river are 3.6 and 7.6 mg/L, respectively. The saturation value of DO (at the temperature of the river) is 8.5 mg/L. The deoxygenation coefficient, kd, is 0.61/day, and the re-aeration coefficient, kr, is 0.76/day. What is the DO 16 km downstream? A. 2.6 mg/L B. 5.9 mg/L C. 6.2 mg/L D. 9.5 mg/L

5.9 mg/L

A city of 100,000 people disposes 1.05m^3/s of treated sewage that still has a BODu of 28.0 mg/L and 1.8 mg/L of DO into a river. Upstream from the outfall, the river has a flow rate of 7.08 m^3/s and a velocity of 0.37 m/s. At this point, the BODu and DO in the river are 3.6 and 7.6 mg/L, respectively. The saturation value of DO (at the temperature of the river) is 8.5 mg/L. The deoxygenation coefficient, kd, is 0.61/day, and the re-aeration coefficient, kr, is 0.76/day. What is the critical distance? A. 23.4 km B. 24.3 km C. 34.2 km D. 43.2 km

34.2 km

MW of EDTA

292.24 g/mol

MW of KHP

204.22 g/mol

Ksp of Cu(OH)2

2 x 10^-19

Name the indicator and titrant of the Volhard Method.

Indicator: Fe3+ Titrant: SCN-

This argentometric method forms a complex with the titrant at the end point.

Volhard

This argentometric method forms a colloid with the titrant at the end point.

Fajans

This argentometric method forms a precipitate with the titrant at the end point.

Mohr

Name the indicator and titrant of the Mohr Method.

Indicator: CrO42- Titrant: Ag+

Name the indicator and titrant of the Fajans Method.

Indicator: DCF Titrant: Ag+

Electrochemical cells in which redox reaction occur spontaneously

Galvanic cells

What type of polymer is used for bulletproof vest?

High Molecular Weight Polyethylene or Linear Polyethylene Fiber

Alkanes are also known as

paraffins

What are sigmatropic rearrangements in organic reactions? A. They are similar to [3,3] Cope rearrangement where the beta ring of a steroid nucleus undergoes photon-activated retro-electrolcylization B. They are thermal reactions which do not allow the formation of a six-membered benzene ring with a cis- or trans-alkene, such as in the formation of vitamin D3 C. They are different from electrocyclic reactions wherein a movement of a sigma bond with a simultaneous rearrangement of the pi system does not occur.

They are different from electrocyclic reactions wherein a movement of a sigma bond with a simultaneous rearrangement of the pi system does not occur.

Determine whether the following statements are T or F for constitutional isomers. They have the same formula They have the same MW They have the same physical properties They have the same connectivity to their atoms

T T F F

What is the difference in structure between a saturated hydrocarbon from an unsaturated hydrocarbon.

A saturated hydrocarbon only has C-C single bonds, while an unsaturated hydrocarbon contains one or more C--C double or C---C triple bonds.

Which type of reaction is typical of aromatic compounds? A. Addition B. Free-radical substitution C. Substitution by postively-charged reagents D. Substitution by negatively-charged reagents

Substitution by positively-charged reagents (EAS)

This aromatic hydrocarbon is formed by incomplete combustion of organic materials. It is found in cigarette smoke, automobile exhaust, and the fumes from charcoal grills.

Benzopyrene

Which compound can you not find C H O N in a single molecule? A. Ascorbic Acid B. Sulfonamide C. Diazepam D. Valium

Ascorbic Acid

The compound 3-phenylprop-2-enal is also known as __________

cinnamaldehyde

An organic compound with molecular formula C3H8O undergoes dehydration with concentrated phosphoric acid. The formed product, X, rapidly decolorizes a solution of bromide in tetrachloromethane. Determine the identity of product X.

Propene

Which of the following compounds will produce alcohols upon addition with Nu? alkanes aldehydes alkyl halides aromatic compounds

aldehydes

These compounds are produced by the reaction of acids with alcohols.

Ester

Name the hydroxy acids

Glycolic, Lactic, Salicylic, Malic, Tartaric, Citric (Galactic Smart C)

Determine the physiologically active substance that comes from the ff sources: bark of the willow tree, pituitary gland, sap of poppy, belladonna plant

salicin, endorphins, opium, atropine

Hydrolysis of lactose yields

galactose and glucose

Cellulose fibers resemble with the protein structure in the form of

Beta-sheets

In the study of lipids, which between these two have a higher melting point? I. Lauric Acid and Glycerol II. Stearic Acid and Glycerol A. Both will have the same MP B. II C. I D. NOne

How many different tetrapeptides can be made if the peptides contain the residues of asparagine, proline, serine, and methionine?

256

Beta-pleated sheets are examples of protein's

secondary structure

In the normal breakdown of phenylalanine, it is initially degraded to

tyrosine

The sugar which forms major component of nucleic acids is

ribose

Esterification reaction A. Produces soap B. is reversible C. is a reaction between an alcohol and an organic acid D. All of the above

All of the above

Which of the following is an organometallic compound? A. Isopropyl alcohol B. Tetraethyl lead C. Zeolite D. Cumene

Tetraethyl lead

Raw materials used for producing ____ cement does not contain iron oxide

White

Neon gas is A. Flammable in nature B. Used in color discharge tube C. Filled in lamps having tungsten filaments D. All

Used in color discharge tube

Hydrohalogenation of an alkene produces _________ A. Alkyl Halide B. Vicinal Dihalide C. Alcohol D. Alkane

Alkyl Halide

Hydration of alkene produces _______ A. Alkyl Halide B. Vicinal Dihalide C. Alcohol D. Alkane

Alcohol

Hydrogenation of alkene produces _______ A. Alkyl Halide B. Vicinal Dihalide C. Alcohol D. Alkane

Alkane

Hydration of alkyne produces A. Ketone B. Alcohol C. Aldehyde D. Carboxylic Acid

Ketone

Hydroboration-Oxidation of alkyne produces A. Ketone B. Alcohol C. Aldehyde D. Carboxylic Acid

Aldehyde

Oxidative cleavage of alkyne produces A. Ketone B. Alcohol C. Aldehyde D. Carboxylic Acid

Carboxylic acid

Benzene undergoes EAS. Match the EAS reactions with their possible products: Halogenation, Nitration, Sulfonation, Friedel-Crafts Alkylation A. Aryl Halide, Nitrobenze, Benzenesulfonic acid, Alkyl Benzene B. Alkyl Benzene, Nitrobenze, Aryl Halide, Benzenesulfonic Acid C. Aryl Halide, Alkyl Benzene, Benzenesulfonic acid, Nitrobenzene

Aryl Halide, Nitrobenze, Benzenesulfonic acid, Alkyl Benzene

Oxidation of primary alcohol with weak base produces ________. A. Aldehyde B. Ketone C. Carboxylic Acid

Aldehyde

Oxidation of primary alcohol with strong base produces _________. A. Aldehyde B. Ketone C. Carboxylic Acid

Carboxylic acid

Oxidation of secondary alcohols produces A. Aldehyde B. Ketone C. Carboxylic Acid

Ketone