geas module 27 - surigao state

GEAS Module 27Surigao State College of Technology

It is better to trust in the Lord than to put confidence in man” Psalm 118:8

What is the binding gap range inKcal/mol for ionic bond?Answer: 150 – 370

What is the binding gap range inKcal/mol for covalent bond?Answer: 125 – 300

What differs in isotopes?Answer: number of neutron & massnumber

Isotopes has different number ofAnswer: neutron

In the study of lepton and quarks, tau ishow much more massive than electron?Answer: 3477

In July 4, 2012, a formal discovery ofHiggs Boson was announced and provedthe existence of the Higgs field that willgreatly affect the human understandingof the universe. What it the mass inGev/c^2 of Higgs Boson?Answer: 125 – 127

In period 3, the most active non-metallicelement isAnswer: Chlorine

In period 3, the element with largestatomic radius is in groupAnswer: 1

What element is periodic table reactsvigorously with water?Answer: Group 1 Alkali Metals

In joining metals using laser beamwelding is carried out by using opticalenergy source focusing on the centers ofa very small spot, such as a diameter incircle having ____inches.Answer: 0.004 – 0.04 inches

In August 2010, the hostage taking inQuirino Grandstand was covered by themedia. Media coverage of crime scenessuch as hostage taking and kidnappingis found in what section of the article 6?Answer: Section 1

When personal attacks against anyperson, institution or group are aired,that person, institution or group shall be

given a fair opportunity to replyimmediately in the same program, ispossible, or at the earliest opportunity.If not, the opportunity to reply shouldbe given in any other program undersimilar conditions. This provision of2007 Broadcasting Code of thePhilippines is written in____.Answer: Article 4

What type of organization where themanager has only 25% fulltime work?Answer: Weak Matrix

Relates the project structure to workingstructure to make sure that the projectscope elements is assigned to aresponsible person.Answer: Accountability Matrix

What hardness tests that is used fornon-ferrous alloys?Answer: Brinell Test

Test performed by pressing or steeltungsten carbide 10mm in diameter to asurface with load 500kg.Answer: Brinell Test

Rockwell Hardness test used to measurevery soft materials?Answer: Rockwell E

Which of the following is hardnesspenetration test has a squarepyramid______

A. Vickers testB. RockwellC. Brinell testD. Meyer

What physical property controlscapillarity?Answer: Viscosity

Brinkman number is directlyproportional to ______.Answer: Dynamic viscosity

What is the equation of dimensionlessprandtl number?Answer: Specific heat times dynamicviscosity over thermalconductivity

What is the mass transfer analog toprandtl number?Answer: Schmidt number

What refers to the relationship betweenshear stress, applied stress and therelation of slip system?Answer: Schmids Law

What intermolecular bond can beremove from acid-base reaction?Answer: Coordinate Covalent Bond

Essentially, double declining balancemethod in computing depreciation ishow many times compared in straightline methodAnswer: 2

If three coplanar forces are inequilibrium, then each force isproportional to the sine of the anglebetween the other two forces.Answer: Lami’s theorem

In an Ideal Brayton cycle, heat rejectionin the atmosphere is in whatthermodynamic process.Answer: Isobaric process

What process is used in comparingefficiency of actual turbines to an idealone?Answer: Isentropic process

In ideal Rankine cycle, the pump andturbine should generate no entropy tomaximize network power. It is whatthermodynamic process?Answer: Isentropic process

What process that uses throttlingthermodynamic process?Answer: Isenthalpic process

In dynamic theory, an oscillator to beisochronous if its frequency is ____ toits amplitudeAnswer: independent

At 20 degrees Celsius, which of theelement has highest Poison’s ratio?Answer: Brass

Which of the element has the highestultimate strength?



Answer: Nickel

Which atomic structure has the same incoordination number?Answer: FCC & HCP

What atomic structure having the samenumber in atom per cell?Answer: BCC & HCP

What atomic structure has the mostefficient atomic packing factor?Answer: Face Centered Cubic

A state in a life of an agreement whenthere’s an agreement of contractbetween the parties.Answer: Birth

A contract that is perfected by deliveryof the thing which is the object of thecontractAnswer: Real Contract

A contract that cannot enforced in thecourt.Answer: Unenforceable Contract

Manner of contract to which it isexecuted or manifested is referred toas____ of contract.Answer: Form

Voidable contract:Answer: is valid and binding unlessannulled in proper by the court

What refers to an agreement which lackone or some, or all elements or do notcomply with formalities essential for theexistence of a contract?Answer: Inexistent Contract

Right consideration, but false statementAnswer: Falsity of cause

A contract that possess all essentialrequisites of a valid contract but oneparty is not capable of giving consent orconsent is vitiated by mistake, violence,undue influence, intimidation and fraudis called _______.Answer: Annullable contract

____ is a fraud committed by one partybefore of the time that of the celebration

of the contract to secure the consent ofthe other.Answer: Casual fraud

A defective contract where it has all theessential requisites of a contract and thecontract itself is valid, but by reason ofinjury or damage to third person, suchas creditors, the contract may berescinded.Answer: Rescissible contract

In the law of obligations and contracts,different kinds of conditionalobligations are mentioned. What do youcall the condition, suspensive in nature,and which depends upon the sole will ofone of the contracting parties?Answer: Protestative

What kind of obligation occurs whenthere is law, contracts, quasi-contracts,delicts, quasi-delicts?Answer: Civil Obligation

What kind of obligation in which thesubject is a thing which the debtor mustdeliver to the creditorAnswer: Real Obligation

What type of obligation which one of thedebtors may render and/or each one ofthe creditors has the right to demand toany of the debtors, entire compliancewith prestation?Answer: Solidary Obligation

What type of obligation where one of theprestation has been agreed upon but theobligor may render another insubstitution?Answer: Facultative

What is the modulus of elasticity inshear?Answer: N/m^2

What is the reciprocal of compressibilityin thermodynamics?Answer: Bulk modulus

Lowest bonding energyAnswer: Van der Waal’s

___ is intermolecular force that induceddipole force.

Answer: Van der Waal’s

What hydrocarbon contains one triplebond between two carbons?Answer: Alkynes

Which hydrocarbon are unsaturatedwhich means that H can be added?Answer: Alkynes & Alkenes

State of hybridization where there canbe one single bond, one triple bond ortwo bond.Answer: sp hybridization

In hybridization of carbon, what type ofbonds is found in sp2 hybridization?Answer: two single bond and onedouble bond

In the hybridization of carbon, which isnot a molecular geometry of sp3hybridization?Answer: Linear between two atombonded

A type of debt that matures before oneyearAnswer: Bill

Amount given to bondholder as interestpaymentAnswer: Coupon

Notes are debts that mature within ___years.Answer: one to 10 years

A corporate bond is said to be long termif it has a span of over than ____.Answer: 12 years

According to the Broadcasting Code ofthe Philippines, the maximum penaltyfor an individual with light offence inradio?Answer: 20,000

According to the Broadcasting Code ofthe Philippines, What is the maximumpenalty for an individual with lightoffense in television?Answer: 50,000



When an individual commits a graveoffense on radio he will be suspendedfor 60 days for the ____offense.Answer: second

Theory about people’s idea on their joband surroundingAnswer: Expectancy theory

The energy flux due to a massconcentration gradient occurring ascoupled effect of irreversible processAnswer: Dufour effect

Statement that does not explain whyelement in a group are placed togetherAnswer: they tend to have the sameelectronegativities

Concentration gradient is the rate ofchange of composition with distance innon-uniform materials typicallyexpressed in ____.Answer: atoms/cm^3 per cm

In study of ions what is the unit of flux?Answer: atoms/cm^2-s

A cantilever beam 3 m long is subjectedto a moment of 10 kN-m at the free end.Find the maximum shear of thismoment.Answer: 0 (Zero)

The following statements are trueregarding analysis of trusses, EXCEPT:Answer: they are assumed to beeither rigid or elastic

Which barium is not a polymer?Answer: Barium Titanate

An x-ray is:Answer: An electromagneticradiation

A gamma ray is compose of highenergy___.Answer: Electromagnetic radiation

A gamma ray is compose of:Answer: High energyElectromagnetic radiation

The most penetrating type of radiationgiven off by radioactive element is

Answer: gamma radiation

Austentite is common term for ____Answer: Gamma iron

Besides carbon, what other elementsform crystals of the diamond structurelattice.Answer: silicon and germanium

It is use to encapsulate integratedcircuit:Answer: Epoxy

What radiation ionizes hydrogenparticles?Answer: Alpha particle and Betaparticle

What is true regarding Bi-concave lens?Answer: cannot form real images

The half-life of a certain isotope is eightdays. After 32 days, how many grams ofa 40-gram sample will remain?Answer: 2.5g

Isentropic process on a heat engine is onwhat step of Carnot cycle?Answer: 4

It is exchange particle with strongnuclear force.Answer: Pion

Integer of spin particles in the spinstatistic theoryAnswer: Boson

What are the elements involved in thecoordinate covalent bond?Answer: non-metal and cation

Metal that has high binding energyusually have:Answer: Modulus of elasticity is high,melting temperature is high, andlow coefficient of thermalexpansion

In matrix organization _____ manageris responsible for the skills developmentand training since he/she is the bestperson to evaluate.Answer: Functional manager

Ceramics in the periodic table can befound in ____.Answer: 1 through 5B

Polymer in the periodic table can befound in ____.Answer: 4B

The following statements aboutceramics are true except one. Whichone?Answer: ceramic are organiccrystalline structure

All are state about polymers except:Answer: Polymers has high ultimatestrength

Group 1A elements are easily ionizedbecause:Answer: they have single “s” electronin outer shell

According to hydrogen schrodingerequation solution, the energy level ofhydrogen electron should depend onlyon____Answer: Principal quantum number

In isentropic process, the inlet state andexit pressure is _____.Answer: the same for ideal andactual device

Which element does not have BCCstructure?Answer: Platinum

Use to eliminate problem regardingPERT (Project Evaluation ReviewTechnique)Answer: Monte Carlo Simulation

What refers to the network techniqueallows conditional and probabilistictreatment of logical relationship?Answer: GERT (Graphical EvaluationReview Technique)

The length of time, expressed as workunits, that a specific activity may bedelayed without delaying the start ofanother activity scheduled to followimmediately after. It is also known asfree slack.Answer: Free float



It is an empirical equation which relatesthe strength of the metal to its grain sizeAnswer: Hall – Petch equation

In ideal gas law, what is the volume permole at 0 Celsius, 1 atm?Answer: 22.414 L/mol

Part II of 2007 Broadcasting Code of thePhilippines refers to the __________.Answer: Implementation of rule andregulation (IRR)

The technique used in analyzes theimage of microstructure to know itsquantitative information such as grainsize, shape, grain dislocation, etc.Answer: Image analysis

Amount of moment of inertia of theobject is unchanged after the object isstretch parallel to the axis of rotationAnswer: Stretch rule

Refers to the rate of interest prior totaking inflation into accountAnswer: Nominal rate interest

Real rate of interest is equal to?Answer: Nominal rate of interest –inflation

An economic process that implies to theproduction cost, solve problems,andused materials efficiently.Answer: Value engineering

Under McGregor’s theory, it is a type ofmanager who thinks all people arebasically lazy and unless threatened orin some way forced to do work, they willnot work.Answer: Type X theory

____ is the interest that hasaccumulated since the principalinvestment or since the previousinterest payment if there has been onealready.Answer: accrued interest

International System Organization(ISO) is updated or reissued every ___Answer: 5 years

A person leads other person by thevirtue of his or her charisma, is whattype of power?Answer: Referent Power

An organization where management hasthe complete powerAnswer: Pure Project Organization

In the study of leptons and quarks,varieties of elementary particles arecommonly called ___.Answer: Flavor

What refers to the shear stress whichdepends on the Burgers vector and theinterplanar spacing, required to cause adislocation to move?Answer: Peierls – Nabarro Stress

A type of constraint on which the firstactivity must be finish first before otheractivity will start.Answer: Finish – to – Finish

At what level of structure has the atomicarrangement known long-rangearrangement?Answer: -10nm – cm

In regenerator gas turbine,Answer: the regeneration decreasesthe efficiency of engine

Planck’s constant represents:Answer: the ratio between themagnitude of quantum of radiatedenergy and its frequency.

The entropy of a system approaches aconstant value as temperatureapproaches zero. What do you call theconstant value?Answer: Residual entropy

What is the computation for the annualdepreciation of the double decliningbalance method?Answer: Depreciation rate times thenet book value at the beginning ofthe year

What refers to the Van der Waals forcethat occurs between molecules that havepermanent dipole moment?Answer: Keesom Interaction

What refers to the liquid to gaseousphase transition of the fluid due to lowpressure?Answer: Cavitation

In project management, the display incumulative cost, labor hours and otherquantities that is plotted against timeAnswer: S-curve

A graphical representation of result overtime against control limits of a process.Answer: Control chart

It is the process of identifying early andlate, start and finish.Answer: Network analysis

In an ideal refrigeration process, whichstatement is true regarding the liquidentering the compressor?Answer: the enthalpy of the liquidentering is equal to the enthalpy ofthe saturated mixture

Compressibilty is a measure of therelative volume change of fluid or solidas response to a pressure (or meanstress) change. Compressibility factor is:Answer: Directly proportional tomolar volume

Not part of the irreversible processAnswer: Elastic deformation

Which is not true about dislocation?Answer: It is crystalline lattice that itis found in unexpected place

Superconductivity of certain materialsthat has an electrical resistance of equalto zero. Who discoveredsuperconductivity?Answer: Heike Onnes

Soldering is technique for…uses fillermetal alloy with the meltingtemperature of less than _____degreesCelsius.Answer: 425

What is the highest temperature inwhich superconductivity has beenexhibited to date?Answer: 150K



Homologous temperature is the ratio of_____.Answer: Working to meltingtemperature

What refers to the phenomenon alsooccurs at temperature well and belowboiling point of the embrittling element?Answer: Solid-metal embrittlement

Impact test is very useful to determinethe ____ of material.Answer: Ductile-brittle transitiontemperature

How can a residual stress reduced oreliminated?Answer: By stress-relief annealing

What embrittlement is caused bysegregation of impurities to the grainboundaries?Answer: Temper embrittlement

It is define as the emission of visibleradiation from the substance at hightemperature.Answer: Incandescence

What is the third most abundantmetallic element of the earth’s crust?Answer: Magnesium

Which of the following is a NOT a non-ferrous metal?Answer: Carbon

An aluminum-wrought alloy isdesignated by four digits. Which of thefollowing indicates silicon as thealloying element?Answer: 4XXX

A cylinder is called a “thin-walledcylinder if the ratio of the wall thicknessto the diameter of the cylinder is lessthan____.Answer: 1/20

In electromagnetism, _____ discoveredthe connection between electricity andmagnetism when he discovered themagnetic needle deflects by an electriccurrent in a nearby wire.Answer: Hans Christian Oersted

The reproduction of object via light thatcan be form on the surface and existsregardless whether the observer presentor not.Answer: Real image

What is nickel chromium alloy withtensile strength up to 1400Mpa?Answer: Inconel

The reason why a given orbital containsonly two electrons?Answer: Pauli Exclusion Principle

The period 6 of the periodic table iscompose of how many elements?Answer: 32

Selenium is used to improve _____ofthe materialAnswer: Machinability

What alloying element is used to steel todeoxidized it and improvehardenability?Answer: Titanium

What are the best alloying elements ofmolybdenum?Answer: Titanium and Zirconium

How does the white cast iron obtained?Answer: By cooling gray iron rapidly

What is the most significant defect thathelps explain the discrepancy betweenthe actual and theoretical strength ofmetals?Answer: Dislocation

The average atomic mass of an elementis dependent on___Answer: Both the mass and therelative abundance of each of theelements isotopes.

They are the molecular component ofproteins and are essential to biologicalstructure and functions.Answer: Amino acids

____ are proteins that facilitate thespeed and specificity of reactions andprocesses of living organisms.Answer: Enzymes

Are molecules that are natural orchemically synthesized for energystorage, metabolism and as keycomponent for DNA and RNA.Answer: Carbohydrates

In economics, it is the market structurethat consists of few firms producinglarge share of industry’s output.Answer: Oligopoly

It is the optical image defect in whichrays passing through the lenses focuseson different planes.Answer: Astigmatism

An eye defect due to aging / toweakening eye muscles in old ageAnswer: Presbyopia

Superplasticity is a state in which solidcrystalline material is deformed wellbeyond its usual breaking point.Superplasticity is ____Answer: 2000%

A decline in a general price levels oftenby a reduction in the supply of money orcredit?Answer: Deflation

In economics, true cost of any good orservice?Answer: Opportunity cost

A form of energy that is hypothesizedexplains observations that the universeis expanding at an accelerating rate.Answer: Dark energy

_____ is charged borrow, express insingle percentage number thatrepresents the actual yearly cost of thefund.Answer: Annual percentage rate

The relationship of UTS and HB isUTS= 3.5 HB. Ultimate Tensile Strength(UTS) is in expressed in ____.Answer: MPa

What metal is the largest value electricalconductivity?Answer: Aluminum



It is a process in which, at a certaintemperature, new equated, strain freegrain is produced, and the older grainsare replaced.Answer: Recrystallization

In cylindrical shell, what is therelationship between circumferentialstress and longitudinal stress?Answer: Circumferential stress istwice the longitudinal stress

What is true in spherical or thin-walledcylinder container?Answer: Circumferential stress onlyis present

Also known as “engineering materials”Answer: Composite materials

The principal quantum number 1 meansAnswer: It is near the nucleus andhas the least energy

When exposed to the atmosphere, whatliquid is coldest?Answer: Hydrogen

What intermolecular force accounts forthe usually high boiling point of water?Answer: Hydrogen Bond

Which of the following statement istrue?Answer: Sodium has only twovalence electrons that are easilyionisable.

What is the escape velocity of the earth?Answer: 11.2 km/s

Dependency between two projectactivities or a milestone and projectactivityAnswer: link

What Elements that reacts vigorouslywith dilute acidic solution?Answer: Magnesium

Camera employs _____ lens to form___image.Answer: Converging, real

What refers to the deformation of thepolymer fibers that undergoeselongation?Answer: Drawing

A stainless combined with austenite andferrite is called?Answer: Duplex structure

What color of light would produce adouble slit interference pattern whenlargest separation in between brightfringes?Answer: Red

It occurs when the average costperformance falls as output increasesAnswer: Economies of scale

The mass deficit of nucleus is anindication of itsAnswer: Binding energy

Which of the following characteristic ofan organic compound is false?Answer: Organic carbon generallydissolves in water

Spherical lenses suffer from___.Answer: Both spherical andchromatic aberration

The first application of Planck’sconstant came from the study of____.Answer: Radiation from hot bodies

What is the most common type of silica?Answer: Quartz

What is the object of normalizing asheat treatment?Answer: To enhance toughness byrefining the grain size

Jominy end-quenched test is astandardized laboratory test to assesshardenability of____Answer: Ferrous alloys

Radiation occurs when the unstable_____shed to be stableAnswer: Element

In periodic series, where you can foundstrong base formers?Answer: Left

Who states that "The properties ofelements are periodic functions of theiratomic numbers, thus changing thebasis for the periodic law from atomicweight to atomic number?Answer: Moseley

Entropy is the measure of randomnessin a system. Who introduced entropy in1865?

Answer: Rudolf Clausius

If two points in linear waves are inphase, the distance between them mustbe?Answer: Some whole number ofwavelengths

All of the following has excellentcastability except one. Which one?Answer: White cast iron

Which of the following alloys has poorweldability?Answer: White cast iron

Any numbering system used to monitorproject cost, by category such as labor,supplies or materials for example, iscalled ___.Answer: Chart of Accounts

Wavelength of electron beam dependson _____.Answer: Velocity only

Coherent resources refers to the sourceswhich the light has ____Answer: Same frequency and theconstant phase relationship

Graham’s law refers ____Answer: Gaseous Diffusion

If a bar is fix supports a one end andhanging at the other end with aparabolic weight distribution, what isthe angle of twist moment at the freeend?Answer: cube of the bar length

The cross-sectional area of a circular baris clamped [hinged] on one end and isfree on the other; the angle of twist is_____.Answer: directly proportional to thesquare of the length of the bar

A microstructure, a structure ofmaterials that has a long range of_____Answer: 100 – 100,000 nm

Which of the following does notillustrate the effect of temperature orpressure on gas solubility?

A. Air bubbles form on the sides of awarm glass of water



B. Air is more humid on rainydays

C. Boiling frees water of gasesD. Soda pop is bottled under pressure

In thermodynamics, a standardenthalpy is measured in kilojoules permole. In physics, the energy perparticles is expressed in electronvoltwhich is also expressed as____KJ/moleAnswer: 100

Rate of Enthalpy of reaction isdependent on the followingcharacteristic:Answer: Constant Volume andConstant Pressure

It is used to predict changes in thebehavior of reversible reaction when asystem is perturbed from equilibrium bya change in pressure, temperature,concentration or volume.Answer: Le Chatelier's Principle

The aroma associated with this class ofcompound that refers generally aspleasant.Answer: Esters

What is the lowest motivation inMaslow Hierarchy for needs?Answer: Food, Shelter, and Clothes

The orientation of energy level of p-orbitalAnswer: 3

In liquids, the Moody diagram describesthe flow of liquid EXCEPT:Answer: Flow of subsonic diffuser

Which of the following is true whentemperature increases in the stress-strain diagram?Answer: Toughness is increased

It is the ability of a material to absorbedapplied energy without failure.Answer: Toughness

It is the ability of material to resistdeformation or deflection under stress.Answer: Stiffness

Modulus of elasticity is essentially ameasure of slope of an elastic portion ofa curve hence ____ of material.Answer: Stiffness

What refers to the ability of a metal tobe deformed permanently?Answer: Ductility

It is the ability of the material to resistvery small indentation, abrasion andplastic deformation.Answer: Hardness

What do you call a solid polymericmaterial having a molecular weightgreater than about 1000g/mol?Answer: High polymer

It is a type of equilibrium that isrequired when the pressure throughoutout the system is uniform and that hasno unbalanced force to the systemboundaries.Answer: Mechanical equilibrium

Mole is the basic unit of chemistry.Which of the following is not equal to orsame indicated below:Answer: 16 g oxygen molecules

Which of the following is true about theperiodic table?Answer: The atomic radii of elementis increasing from left to right

The atomic radii of element is decreasesfrom left to right across the period in theperiodic chart unitAnswer: noble gases

Which of the following is NOT anexothermic reaction?

A. Explosion of gunpowderB. Burning of sugarC. Melting of oilD. Digestion of food

The critical point for a mixture occursfor which of the following cases?

A. The liquid has no absorbed gasB. The vapour and liquid have

single formC. The vapour phase is stableD. The liquid is completely vaporized

Which is NOT part of noble gases?

A. ArgonB. KryptonC. UraniumD. Radon

Which of the following postulates doesBohr’s model of the hydrogen atominvolve?

A. The electron in an atom has aninfinite range of motion allowed to

B. In any of its energy states, theelectron moves in a circularorbit about the nucleus

C. The states of allowed electronmotion are those in which theangular momentum of the electronis an integral multiple of h/pi

D. All of the above

A scientific law is a statement:Answer: that summarizes observedfacts

Scientific Theory isAnswer: An idea that correctlypredict the result of manyexperiment

A statement which is a possible solutionin a problem in aAnswer: Hypothesis

What is the total number of electrons inthe fourth energy level?Answer: 32

Which is not a solution?

A. AmalgamB. Sugar dissolved in waterC. MayonnaiseD. Oxygen dissolved in water

Which of the two chemical elements arecommon to both DDT and Freon?Answer: Cl and F

Which gas is produced by the action ofsunlight on automobile exhaust?Answer: Ozone

When enough energy is supplied, therigid pattern of the molecules isdisrupted in



Answer: Melting

The periodic table has proven helpful inAnswer: predicting new elements

Positive ions in a “sea of electrons” arereferred to asAnswer: metallic bond

The easier an atom loses its electron, theless itsAnswer: valence electron

The emission of an alpha particle by aradioactive element results in an atomofAnswer: lower mass number andlower atomic number

When solid materials melt, theintermolecular forcesAnswer: decrease

If the volume of one mole of gasmolecule remains constant, lowering thetemperature will make pressureAnswer: decrease

What will happen to the volume of asystem of a confined gas if its pressure isdoubled and its temperature remainsconstant?Answer: It will decrease

If the volume of one mole of gasmolecule remains constant, lowering thetemperature will make pressureAnswer: Decrease

At constant temperature, double thepressure will make the ___Answer: volume decrease

A decrease in vapor pressure will causeAnswer: a decrease in boiling point

In the position of elements in theperiodic table, the most metallicelement is ____Answer: Pb (lead)

The solubility of CO2 gas in the liquidwill decrease ifAnswer: the temperature willincrease

Bromine that have atomic number 35belong to group ___Answer: VIIA

The best way of preventing the increaseof CO concentration in the atmosphereis toAnswer: regulate the use of oil andcoal

An example of a strong acid isAnswer: dilute nitric acid

Who proposed the dualistic nature oflight and extended this idea toelectrons?Answer: de Broglie

In titration an indicator is added to theAnswer: acid or base

Metallic oxide react water to produce __Answer: Base

Which is more basic?A. pH = 13B. pOH = 1C. ph = 7D. pH = 3

Which of the following is the smallestradius?A. RbB. NeC. ClD. Cs

Which of the following species has thehighest ionization potential?A. ClB. MgC. NeD. Ba

On a severely cold night, with thetemperature below freezing, a farmer isafraid that his fruit in the cellar willfreeze, so he places a tub of water in thecellar.Answer: The water, as it freezes, willgive off heat to warm fruits.

Which following is true about basesolution?Answer: changes litmus paper toblue

It is a substance that corrodes metals,destroys living tissue, and deterioratesbuildings.Answer: sulfuric acid

Imperfection of crystal structure ofmetal, void, or inclusion is whatexample of imperfection?Answer: Volume Imperfection

The degree of hardness of water, nomatter what the cause, expressed interm of part per million of _____.Answer: Calcium Carbonate

Which statement is correct?Answer: Pressure changes have littleeffect on solubility if the solute is aliquid or a solid

In purifying water, offensive odor andtaste are removed through whichprocess?Answer: aeration

A proton is falling down to vacuum, itgenerates ___Answer: Electromagnetic wave

Water is hard when itAnswer: contain certain dissolvedsalts

Which of the following contribute about30% to atmospheric air pollution?Answer: Industrial emissions,Mechanical operations, andTransport vehicles

The four characteristics of an electronwave are size, shape, orientation inspace and spin. A particular orbitaldesignatesAnswer: size, shape and orientation

What substance present in tobacco andcigarette smoke may be carcinogenic?Answer: Aromatic Hydrocarbon

Which statement is true?Answer: Melting point and boilingpoint tend to increase withmolecular weight.



A mole is the amount of substance orthe mass of a substance that containsAnswer: 6.02 x 10^23 particles

When dilute hydrochloric acid is addedto sodium carbonate, carbon dioxide isevolved. Which of the following will notspeed up the rate of reaction?Answer: Doubling the volume of thehydrochloric acid

Which of the following statement is nottrue of the atomic model proposed byBohr?

A. The electron revolves around thenucleus in a circular orbit

B. An electron may absorb or emit aquantity of radiation

C. Hydrogen atom is made up of apositively charged nucleus

D. The energy of the electron in agiven orbit is not fixed

The decay of a neutron to a proton yieldAnswer: beta particle

The source of energy of the sun isAnswer: fusion of hydrogen atoms toform helium

The main points of the collision theoryinclude the following EXCEPT:

A. the higher the energy of themolecules, the slower the rateof a reaction

B. a more concentrated solutioncontains a greater number ofparticles colliding

C. the molecules must have properorientation

D. only certain collisions betweenparticles result in the formation ofproducts

The product of beta cycle hasAnswer: No change in mass numberand higher atomic number

States that the electrons fill the orbitalsone at a time, starting with the lowestenergy orbital then proceeding to theone with higher energyAnswer: Aufbau Principle

It refers to the Appearance of more thanone crystal structure.Answer: Allotropism

The thermoplastics, thermosets andelastomers are______Answer: Plastics

Which is NOT true about ionic crystals?Answer: particles maintain a shapethat is easily distorted

The phenomenon’s of scattering of light,when monochromatic light pass to thetransparent medium.Answer: Raman Effect

Which are true about the pump used toincrease the pressure of the waterentering the boiler of the steam powercycle?Answer: Enthalpy of water leaving ishigher than enthalpy of waterentering

Increasing the temperature increasesthe rate of reaction because itAnswer: Increase number ofcollision between particles

On separating a mixture of ethanol andwater by distillation, which of thefollowing properties were evident?Answer: Flammability, Boiling point,taste and smell

The separation of component mixture,making use of different of their boilingpoint is called _____Answer: Fractional distillation

Bluish black halogen solid that givespurple fumes when heatedAnswer: Iodine

In HCl molecule, the atoms are held byAnswer: polar covalent bond

Each of the following statement is trueabout the rate of reaction except:

A. The rate is dependent on catalystB. The rate is dependent on

concentration of reactantsC. The rate is dependent on the

volumes of reactants

D. The rate is dependent on thetemperature

Reason why ethanol separates fromwaterAnswer: Ethanol has lower boilingpoint than water

Which reaction gives the highestamount of energy?Answer: Fusion reaction

When the red light become brighter, itchange it ___Answer: Total Energy

Which of the following is NOT a basicassumption of the kinetic theory?Answer: Since collision of moleculesis perfectly elastic, there is astrong attractive force betweenmolecules in the gaseous state

A standard solution is oneAnswer: with a known concentration

Alcohol present in alcoholic beverages isAnswer: ethyl alcohol

Standing waves was produced byAnswer: Superposition of identicalwaves travels in opposite direction

In precipitation of hardening, whataging is above room temperature?Answer: Artificial aging

The pupil of the eye changes its size toadjust from ____Answer: Different amount of light

When alpha particle pass through thethin sheet amount of gold foil, particledeflect byAnswer: Electrostatic repulsion fromnucleus

What is the maximum stress subjectedto a material without fatigue failure?Answer: Endurance limit

When violin string is energized, whichovertone structure is two octaves abovefundamentals?Answer: Third



Cast iron is composed of silicon up toabout ____.Answer: 3.5%

Vapor pressure collected above water iscorrected by?Answer: Subtracting vapor pressureof water at that temperature

What crystal structure those have lowprobability to slip?Answer: Hexagonal Close Packcrystal

The combination of slip plane anddirection of slip is called ____Answer: Slip system

In physics, what refers in the splitting ofheavy nucleus with enormous release ofenergy?Answer: Nuclear fission

The number of orbitals in secondaryprincipal energy level, n = 2, it atom is____Answer: 4

In AISI (American Iron and SteelInstitute) and SAE (Society ofAutomotive Engineers), designatescarbon and alloying steel using fourdigits. What is the designation of firsttwo digits?Answer: Alloying element and theirpercentage

ASTM (American System for Testingand Materials) grain size number, n,related to the number of grain, N, persq. inches to the magnification of 100X(equal to 0.0645 sq. mm of area) is whatformula?Answer: N = 2^n-1

When the white light passes through adiffraction grating, the colors areseparated because the wavelengthdetermines the ____.Answer: Angular constructiveinterference

Polymer degradation process wherebymolecular chain bonds are raptured bychemical reaction or by exposure ofradiation or heatAnswer: Scission

Which is true for ideal gases but not forreal gases?Answer: the volume of molecule inthe gas is directly proportional tothe volume of gas as a whole

The complex mixture of pollutant iscalled?Answer: Oxidant

A polymer with two different repeatunits, randomly distributed to themolecular chain is called _____.Answer: random copolymer

For metallic elements that exist in apure form as molecules, distancebetween two atoms covalently bonded.What do you call for this half distance?Answer: Covalent radius

100 erg of energy per gram is equivalentto _____Answer: 1 rad

1 rad of Therapeutic X-ray is equivalentto _____Answer: 1 rem

For a metal atom to replace metallic ionsolution, the metal must be _______.Answer: Higher on the electromotivechart than the metal in a solution

An object can be treated geometricallyas through it is a collection of pointsource when the object _____.Answer: Reflects diffusely

In full annealing, what is the termgenerally applied to annealing of ferrousalloy?Answer: Low and medium carbon

Safe stress is the yield strength dividedby a factor of safety for what type ofmaterial?Answer: Ductile material

A light square passes through a lens offocal length +f. The emerging light willbe divergent if the distance from sourceto lens is?Answer: less than f

_____ is when the load if applied withthe material beyond at the point ofyielding.

Answer: plasticity

What is the compound called asdepressant or “downer”?Answer: Seconal

Die IC is ___ thick and its sides are6mm.Answer: 0.4mm

The amount of energy needed to removefirst electron is called first ionizationenergy. The lowest first ionizationenergy is found with the _______.Answer: Least electronegative atom

The molecule is non-polar if:Answer: There exist polar bondswhile the dipole arrow countersbalance because of symmetry inthe molecule

geas module 27 - surigao state

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