top secret.pdf

“FOR YOUR EYES ONLY”

NOTE: IF YOU ARE GIVEN THIS FILE IT MEANS YOU ARE TRUSTWORTHY THAT YOU WILL NOT GIVE

ANYBODY A COPY OF THIS SO PLEASE COMPLY. “FOR EVERY ACTION THERE IS EQUAL AND OPPOSITE

REACTION”

QUESTION: Date of approval of RA 9292

Choices: a. April 14, 2004 b. April 14, 2007 c. April 17, 2004 d. None of these

ANSWER: c. April 17, 2004

QUESTION: There are __________ Articles and __________ sections in the RA 9292.

Choices: a. 8,42 b. 8, 43 c. 7, 43 d. 7,42

ANSWER: B. 8, 43

QUESTION: Any person who shall violate any provision of RA 9292 or any rules, regulations, the Code of Ethics

and the Code of Technical Standards of Practice is stated in section _________.

Choices: a. 35 b. 36 c. 37 d. 38

ANSWER: a. 35

QUESTION: This act is was consolidation of House Bill No. 5224 and Senate Bill No. 2683.

Choices: a. RA 9292 b. RA 5734 c. RA 6541 d. None of these

ANSWER: a. RA 9292

QUESTION: The chairperson of the PRC shall include in the Commission’s program the implementation of RA

9292, the funding of w/c shall be included in the Annual General Appropriation Act.

Choices: a. Sec 39 b. Sec 40 c. Sec 41 d. Sec 42

ANSWER: b. Sec 40

QUESTION: According to section 43, RA 9292 shall take effect __________ following its full publication in the

__________ or any newspaper of general circulation.

Choices: a. 15 days, Law Gazette b. 15 days, Official Gazette c. 15 days, internet d. 30 days, internet

ANSWER: b. 15 days, Official Gazette

QUESTION: Who among the following persons was not a signatory of the 9292?

Choices: a. FRANKLIN DRILON b. JOSE DE VENECIA JR c. OSCAR G. YABES d. JESUS P.

NAZARENO

ANSWER: d. JESUS P. NAZARENO

QUESTION: Section 40 of RA 9292.




REACTION”

Choices: a. Appropriations b. Repealing clause c. Effectivity d. Separability clause

ANSWER: a. Appropriations

QUESTION: Which of the following is not true for the qualifications of Board Members of Electronics Engineering?

Choices: a. Be a citizen and a resident of the Philippines for 5 consecutive yrs prior to his appointment b. Member of good standing of the APO c. Must not have been convicted of an offense involving moral

turpitude d. Be of good moral character and integrity

ANSWER: a. Be a citizen and a resident of the Philippines for 5 consecutive yrs prior to his appointment

QUESTION: All records of the Board, including applications for the examination, administrative cases involving

PECE, ECE and ECTs shall be kept by

Choices: a. BECE b. IECEP c. PRC d. APO

ANSWER: c. PRC

QUESTION: The members of the Board shall hold office for a term of __________ from date of appointment or until

their successors shall have been appointed and qualified and may be re-appointed once for another term.

Choices: a. two years b. at least 3 years c. 3 years d. 5 years

ANSWER: c. 3 years

QUESTION: Section 7 states that the Board is vested with the authority to: Adopt an official __________ of the

Board.

Choices: a. logo b. icon c. Avatar d. Seal

ANSWER: d. seal

QUESTION: The compensation and allowances of the Board is comparable to that being received by the Chairman

and members of existing regulatory boards under the Commission as provided for in the

__________.

Choices: a. Civil Service b. Dept of Budget & Mngt c. RA 1992 d. Gen Appropriations Act

ANSWER: d. Gen Appropriations Act

QUESTION: Each member of the Board shall take the/a __________ prior to the assumption of office.

Choices: a. panel interview from the Appointment committee b. board exam c. proper oath d. none of

these

ANSWER: c. proper oath




REACTION”

QUESTION: How much or what fine is required for any person who shall violate any provision or any rules,

regulations, the Code of Ethics and the Code of Technical Standards of Practice promulgated

under RA 9292?

Choices: a. Not less than Php100,000.00 nor more than Php 1M or by imprisonment of not less than 6 months

nor more than 6 year b. Php100,000.00 to Php 1M or 6 yrs imprisonment or both, in the discretion of

the court c. Not less than Php100,000.00 nor more than Php 1M or by imprisonment of not less than 6

months nor more than 6 years, or both, in the discretion of the court d. none of these

ANSWER: c. Not less than Php100,000.00 nor more than Php 1M or by imprisonment of not less than 6

months nor more than 6 years, or both, in the discretion of the court

QUESTION: The Board and the __________ shall correct and rate the licensure examination papers

Choices: a. Commission b. APO c. IECEP d. none of these

ANSWER: a. Commission

QUESTION: According to section 2-Statement of Policy, the state shall therefore develop and nurture competent,

virtuous, productive, and __________ PECE, ECE, and ECTs

Choices: a. God-fearing b. religious c. versatile d. well-rounded

ANSWER: d. well rounded

QUESTION: A candidate for Electronics Engineer or Electronics Technician who obtains a passing rating in the

majority of the subjects but obtains a rating in the other subject/s below _________ percent but

not lower than __________ percent, shall be allowed to take one removal examinations on the

subject/s where he/she failed to obtain the passing rating.

Choices: a. 70, 50 b. 70, 60 c. 50, 70 d. 60, 70

ANSWER: b. 70, 60

QUESTION: Within __________ years after the effectivity of RA 9292, the Board shall issue Certificate of

Registration and Professional Identification Cards without examination to all applicants for

registration as Electronics Technicians who comply to all the requirements stated in section 20.

Choices: a. 3 (three) b. 5 (five) c. 7 (seven) d. none of these

ANSWER: b. 5 (five)

QUESTION: With reference to prob 22, all submittals/documents shall be accompanied by a certification from

__________ registered PECEs vouching for the integrity, technical capability and good moral

character of the applicant.

Choices: a. at least 3 b. 3 c. 5 d. none of these

ANSWER: a. at least 3




REACTION”

QUESTION: It is a method of managing all the activities that affect the quality of goods or services in order to prevent faults.

Choices: a. Quality Assurance b. Quality Circle c. Quality Control d. Quality Standard

ANSWER: a. Quality Assurance

QUESTION: This type of business organization can be set up without any formality. It exist when there are a number of people involved who are part owners of the business.

Choices: a. Association b. Corporation c. Partnership d. Sole Proprietorship

ANSWER: c. Partnership

QUESTION: Items purchased from a vendor cost Php 20 each, and the forecast for next year’s demand is

1,000 units. If it costs Php 5 every time an order is placed for more units and the storage cost

is Php 4 per unit per year, what quantity should be order each time?

Choices:

a. 20 b. 30 c. 40 d. 50

ANSWER: d. 50 units

SOLUTION ( IF PROBLEM -SOLVING)

Q = (2DS/H) = ((2(1000)(5))/4) = 50 units Where D = Demand S = Ordering cost H = Storage cost/holding cost

QUESTION: Two products, X and Y, both require processing time on machines I and II. Machine I has 200 hours available, and machine II has 400 hours available. Product X requires one hour on machine I and four hours on machine II. Product Y requires one hour on machine I and one hour on machine II. Each unit of product X yields PhP 10 profit and each units of Y yields PhP 5 profit. What is the Linear Programming Model for this problem.




REACTION”

Choices: a. Max Profit = PhP 5X + PhP 5Y

Subject to: X + Y ≤ 200 X + Y ≤ 400 X , Y ≥ 0

b. Max Profit = PhP 10X +PhP 5Y Subject to: X + Y ≤ 200 4X + Y ≤ 400 X , Y ≥ 0

c. Max Profit = PhP 5X + PhP 10Y Subject to: X + Y ≥ 200 4X + Y ≥ 400 X , Y ≥ 0

d. Max Profit = PhP 10X + PhP 5Y Subject to: X + Y ≤ 200 X + Y ≤ 400 X , Y ≥ 0

ANSWER: b. Max Profit = PhP 10X +PhP 5Y

Subject to: X + Y ≤ 200 4X + Y ≤ 400 X , Y ≥ 0

SOLUTION ( IF PROBLEM -SOLVING) Let X = number of units of product X to be produced. Y = number of units of product Y to be produced.

Max Profit = PhP 10X +PhP 5Y Subject to: X + Y ≤ 200 Capacity of Machine I 4X + Y ≤ 400 Capacity of Machine II X , Y ≥ 0 Nonnegativity Constraints

QUESTION:

This process can be used to measure achievement in Total Quality Management (TQM) system. Also it provides the essential control and measure feedback loop necessary for quality improvement Choices:

a. Benchmarking b. Continuous Improvement c. Quality chain d. Quality circle

ANSWER: a. Benchmarking

QUESTION: A project has been defined to contain the following list of activities, along with their required times

for completion

Activity Time (days) Immediate Predecessors

A 5 -

B 6 -

C 3 A

D 8 A

E 2 B,C

F 11 B,C

G 1 D

H 12 E,D

What is the completion time of the whole project?.




REACTION”

Choices:

a. 17 days b. 22days c. 25 days d. 37 days

ANSWER: c. 25 days


QUESTION: Here are the monthly data for the past 8 months. From these data, what are the forecasts for the

following 4 months using linear regression?

Period Actual

1 300

2 540

3 885

4 580

5 416

6 760

7 1191

8 760

Choices: a. 9th—825, 10th- 910.33, 11th – 995.66, 12th – 1,081 b. 9th--900, 10th- 967, 11th - 1034, 12th – 1,101 c. 9th--997, 10th- 1067.67, 11th – 1138.33, 12th – 1209 d. 9th--1027, 10th- 1,104, 11th – 1,181, 12th – 1,258

1

2

3

4

5 6

B

A

D

E

F

H

G

1

8

5

6

3 C

2

11

12

0

0

5

5

13

13

13

13 25

25

8

11




REACTION”

ANSWER: c. 9th--997, 10th- 1067.67, 11th – 1138.33, 12th – 1209

SOLUTION ( IF PROBLEM -SOLVING) y = a + bx

Where y = the dependent variable a = the intercept b = the slope of the line x = the independent variable

xb - y a

22 xnx

yxnxyb

a = 361 b = 70.67 equation y = 361 + 70.67x

QUESTION:

It is the process of attracting potential employees to the company so that the selection process can be carried out. Choices:

a. Advertising b. Benchmarking c. Selection d. Recruitement

ANSWER: d.Recruitement

QUESTION:

It is the name given to any activity undertaken by the organization with the express purpose of gaining information about potential customer Choices:

a. Market Analysis b. Market Intelligence c. Market Research d. Market System

ANSWER: c. Market Research

QUESTION: It is used when product are made singly or in small batches. It happens when a small number of products are processed at each storage before going on to the next stage. Choices:

a. Batch Production b. Flow Production c. Job Production d. Production Design

ANSWER: c. Job Production QUESTION: It involves a voluntary association of people, called members, who operate an enterprise collectively. The aim of this organization is not to make profit but to give support to their members.

Choices: a. Association b. Cooperatives c. Private Companies d. Public Companies

ANSWER: b. Cooperatives

QUESTION: It is the rational way to ensure that our limited time is always used effectively.




REACTION”

Choices:

a. Management Commitment b. Management Responsibility c. Time Management d. Time Conflict

ANSWER: c. Time Management

QUESTION: The position x of an experimental rocket moving along a long rail is measured to be x(t) = (4m/s)t + (7m/s2)t2 + (5m/s3)t3 – (0.35m/s4)t4 over the first 10s of its motion, where t is in seconds and x is in meters. Find the velocity of the rocket for the first 10 seconds.

Choices: a. 43 m/s b. 224 m/s c. 244m/s d. 2240 m/s

ANSWER: C

SOLUTION ( IF PROBLEM -SOLVING) v = dx/dt = (4m/s) + (14m/s2)t + (15m/s3)t2 – (1.4m/s4)t3 Substituting t = 10 s, gives v = 244 m/s

QUESTION: Early in the nineteenth century, James Watt invented the steam engine. In order to convince people, who relied heavily on horses for mechanical work, he demonstrated how useful his steam engine was by utilizing a horse that lifted water from a well over a certain period of time and called the corresponding power expended “one horsepower”. Assume that water has a mass density of 1.0 x 103 kg/m3, that the well was 20m deep, and that the horse worked for 8 hours. How many liters of water did the horse raise from the well? Use the following constants: 1 hp = 746 Watts, g = 9.8 m/s2.

Choices: a. 1.1 x 10 2 L b. 110 L c. 1.1 x 103 L d. 1.1 x 105 L

ANSWER: D




REACTION”

SOLUTION ( IF PROBLEM -SOLVING) The work done of the tension in lifting a mass of water is given by:

W = m g y where W = work, m = mass = pV, y = distance, V = volume, p= mass density, The power is given by:

P = work /time, t

yVg

Substituting all values, we get for V

V =

32

233101.1

20/8.9/101

/36008746mx

msmmkgx

hshxW

Since 1 m3 = 103 L, then V = 1.1 x 105L.

QUESTION: As provided in ACT 3846, the construction of a radio station shall begin only when

Choices: a. A personnel of NTC has conveyed through telephone that the application has

already been approved. b. the firm applying for the construction permit has submitted to the NTC its

application for the same.

c. the technical documents has already been signed and sealed by the PECE. d. The NTC has already issued a Permit to construct.

ANSWER: D

QUESTION: As provided in RA7925, a VAS provider needs to secure a franchise if Choices: a. it is offered by a telecommunications entity whose proceeds of utility operations

are not cross-subsidized.

b. it does not discriminate other service providers against rates.

c. it is offered by a telecommunications entity that uses a separate book of accounts

for VAS.

d. it puts up its own network.

ANSWER: D

QUESTION: According to the code of ethics, if you are employed in a company and you wish to engage in a business which may compete with your company, the most ethical thing to do is to




REACTION”

Choices: a. inform your employer about it b. have somebody run the business instead of you c. try to find new clients

d. keep your prices lower than your company’s

ANSWER: A

Question:

The property of a substance which remains constant if no heat enters or leaves the system, while it does

work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave.

Choices:

a. internal energy b. system c. entropy d. enthalpy

ANSWER:

C. entropy

Question:

The quantity of heat required to change the temperature of unit mass through one degree.

Choices:

a. Temperature b. Specific Heat c. Thermal Equilibrium d.

Calorie

ANSWER:

b. Specific Heat

Question:

“If the temperature of a given quantity of gas is held constant, the volume of the gas varies inversely with

the absolute pressure during a change of state”

Choices:

a.General Gas Laws b. Joule’s Law c. Charles’ Law d. Boyle’s

Law

ANSWER:

d. Boyle’s Law

Question:

An internally reversible process of a substance during which the pressure remains constant.

Choices:

a.isometric b.isothermal c.adiabatic d.isobaric

ANSWER:

d.isobaric

Question:

The energy stored in a substance by virtue of the activity and configuration of its molecules and of the

vibration of the atoms within the molecules.

Choices:

a.Internal Energy b .Heat c. Enthalpy d.Entropy




REACTION”

ANSWER:

a.Internal Energy

Question:

“When two bodies, isolated from other environment, are in thermal equilibrium with a third body, the

two are in thermal equilibrium with each other” is a statement of……..

Choices:

a.1st Law of Thermodynamics c.2

nd Law of Thermodynamic

b. Zeroth Law d. Maxwell’s Theory of Thermal

Equilbrium

ANSWER:

b. Zeroth Law

Question:

“Not all energy received as heat by a heat-engine cycle can be converted into mechanical work, some are

also rejected” is a statement of…….

Choices:

a.1st Law of Thermodynamic s b.Zeroth Law

c.2nd

Law of Thermodynamics d.Law of Conservation of Energy

ANSWER:

c. 2nd

Law of Thermodynamics

Question:

This Law States that “ The quantity of the substance entering the system is equal to the substance leaving

the system”

Choices:

a.1st Law of Thermodynamics b.Law of Conservation of Mass

c.Newton’s 2nd

Law of Motion d.Law of Conservation of Energy

ANSWER:

b. Law of Conservation of Mass

Question:

“if the pressure of a given quantity of gas is held constant, the volume of the gas varies directly with the

absolute temperature”

Choices:

a. General Gas Law b. Boyle’s Law c. Charles’ Law d. Joule’s

Law

ANSWER:

c. Charles’ Law

Question:

“The Acceleration of a particular body is directly proportional to the resultant force acting on it and

inversely proportional to its mass” is a statement of

Choices:

a. Joule’s Law b. 1st Law of Thermodynamics

c. Newton’s 2nd

Law of Motion d. Boyle’s Law




REACTION”

ANSWER:

c. Newton’s 2nd

Law of Motion

Question:

“Energy is neither created nor destroyed, but is converted from one form to another”

Choices:

a. 1st Law of Thermodynamics b. Newton’s 2

nd Law of Motion

c. 2nd

Law of Thermodynamics d. Law of Conservation of Mass

ANSWER:

a. 1st Law of Thermodynamics

QUESTION: These materials are hard and brittle, insulative to electricity and heat, and very resistant to high temperatures and harsh environments.

Choices: a. polymers b. metals c. ceramics d. semiconductors

ANSWER: c. ceramics

QUESTION: These materials have a large number of non-localized electrons, as an effect are very good conductors of electricity and heat. They are strong yet deformable, and extensively used in structural applications.

Choices: a. ceramics b. composities c. semiconductors d. metals

ANSWER: d. metals

QUESTION: Materials composed of more than one material type and are designed to display a combination of the best characteristics of each component material.

Choices: a. polymers b. ceramics c. metals d. composites

ANSWER: d. composites

QUESTION: A material whose atomic arrangement occurs as periodic, repeating structures over large distances.

Choices: a. Crystalline b. polycrystalline c. solid d. amorphous

ANSWER: a. crystalline




REACTION”

QUESTION: An elemental solid having a different crystal structure, usually due to the prevailing temperature and pressure.

Choices: a. amorphous b. polymorph c. crysallite d. allotrope

ANSWER: d. allotrope

QUESTION: This metal is alloyed with steel to give it corrosion resistance properties, resulting in “stainless steel.”

Choices: a. vanadium b. molybdenum c. chromium d. magnesium

ANSWER: c. chromium

QUESTION: This element is used in modern, super strong permanent magnets because of their high coercivities.

Choices: a. beryllium b. neodymium c. yttrium d. alnico

ANSWER: b. neodymium

QUESTION: The deterioration of an engineered material due to interaction with diverse environments which lead to the degradation of its material properties.

Choices: a. corrosion b. disintegration c. oxidation d. dissolution

ANSWER: a. corrosion

QUESTION: It explains combustion as a result of loss of a substance.

CHOICES: a. Phlogiston b. Roasting c. Reduction d. Fission

ANSWER: a. Phlogiston

QUESTION: The volume of a definite quantity of dry gas is inversely proportional to the pressure provided the temperature remains constant.

CHOICES: a. Charles’ Law b. Boyle’s Law c. Gay-Lussac’s Law d. Dalton’s Law




REACTION”

ANSWER: b. Boyle’s Law

QUESTION: It refers to matter that do not have definite form or structure.

CHOICES: a. Amorphous b. Morphous c. Transient d. Extrinsic

ANSWER: a. Amorphous

QUESTION: Three grams of sulphur dissolved in 200 g of naphthalene C10H8, was found decreasing the

freezing point of the solvent to 0.72 ⁰C. Find the molecular weight of the solute. (Kf C10H8 = 6.9 ⁰C/molar)

CHOICES: a. 351.16 g/mole

b. 115.32 g/mole

c. 135.61 g/mole d. 151.23 g/mole

ANSWER: c. 135.61 g/mole

SOLUTION (IF PROBLEM SOLVING)

g- mole = = 135.61 grams/mole

QUESTION: Substance having a pH level less than 7

CHOICES: a. acid b. base c. salt d. hydrate

ANSWER: b. base

QUESTION: It is the enthalpy change associated with the condensation of gaseous positive and negative ion into a crystal.

CHOICES: a Raoult’s Law b. Lattice Energy c. Enthalpy Of Solution d. Partition Coefficient

ANSWER: B

QUESTION: It is a product of the weathering of complex silicates, particularly of feldspars which are abundant minerals.

CHOICES: a. clay b. chalk c. pyrite d.diamond

ANSWER: A

QUESTION: Electrons occupy all the orbitals of a given subshell singly before pairing begins. These unpaired electrons have parallel spins. This is known as:

CHOICES: a. Building Up Principle b. Aufbau Principle c. Hund’s rule d.David’s rule

ANSWER:




REACTION”

C

QUESTION: This law states that at constant temperature the volume of a sample of gas varies inversely with the pressure.

CHOICES: a. Avogadro’s Law b. Boyle’s Law c. Charle’s Law d. Gay-Lussac’s Law

ANSWER: B

QUESTION: It is the scattering of light by colloidal particles

CHOICES: a. Mott Scaterring b. Tyndall Effect c. Rayleigh Scattering d. Wolf Effect

ANSWER: B

QUESTION: Consider H3AsO3, Arsenic acid (H=1.01,As=74.9,O=16.0).How many mole is 1kg of H3AsO3?

CHOICES: a. 7.94 moles b. 6.94 moles c. 5.94 moles d. 8.94 moles

ANSWER: a. 7.94 moles

SOLUTION (IF PROBLEM SOLVING) H3AsO3 = 3(1.01 g/mol) + 74.9 g/mol + 3(16.0 g/mol) = 125.93 g/mol moles H3AsO3 = (1kg)(1 mol/125.93g) = 7.94 moles H3AsO3

QUESTION: It is customary to indicate accuracy by using a certain numbers of figures or digits.

CHOICES: a. atomic mass unit b. International

system c. significant figures d. supplementary units

ANSWER: c. significant figures

QUESTION: It is required for organic compounds.

CHOICES: a. hydrogen b. oxygen c. boron d. carbon

ANSWER: d. carbon

QUESTION: Term used to denote the technology of treating a mined ore to obtain a product higher on concentration of a wanted mineral from the unwanted rock mass in which it occurs.

CHOICES: a. ore dressing b. galvanization c. alloying d. filtering

ANSWER: a. ore dressing

QUESTION:




REACTION”

It states that, "If a stress is placed on a system on equilibrium whereby the equilibrium is altered, that change will take place which tends to relieve or neutralize the effect of the added stress".

CHOICES: a. Le Chatelier's Principle

b. Snell's Law c. Huygen's Principle d. Avogrado's Law

ANSWER: a. Le Chatelier's Principle

QUESTION: The energy possessed by a substance that allows it to be changed into a new substance.

CHOICES: a. Chemical energy b. Physical energy c. Potential energy d. Nuclear energy

ANSWER: a. Chemical energy

QUESTION: If heat is absorbed by the system during a chemical change, it is called as:

CHOICES: a. exothermal b. endothermal c. endothermic d. exothermic

ANSWER: c. endothermic

QUESTION: Who determined the quantitative relationship between the amount of electricity used in electrolysis and the amount of chemical reaction that occurs?

Choices: a. Ernest Rutherford b. Michael Faraday c. Marie Curie d. John Dalton

ANSWER: Michael Faraday.

SOLUTION ( IF PROBLEM -SOLVING) In 1832-1833, Michael Faraday (1791-1867), Davy’s student, determined the quantitative relationship between the amount of electricity used in electrolysis and the amount of chemical reaction that occurs.

QUESTION: It is considered as derivatives of ammonia in which one or more of the hydrogens have been replaced by the alkyl or aryl group. It is characterized by unpleasant odors.

Choices: a. Alkanes b. Esters c. Amines d. Nitriles

ANSWER: c. Amines

QUESTION: Calculate the molar concentration of a solution that contains 15g of potassium hydroxide in 225ml of solution.

Choices: a. 1.2 M b. 11.9 M c. 4.46 M d. 2.60 M

ANSWER: a. 1.2 M


QUESTION: Calculate the ratio of the rate of diffusion of hydrogen to the rate of diffusion of oxygen. How fast does hydrogen diffuse than oxygen? Given: Density of oxygen is 0.0899 g/L and the density of oxygen is 1.43 g/L.

Choices: b. One b. Two c. Three d. Four

ANSWER: d. Four




REACTION”


QUESTION: What is the volume of 1 moles of a gas at 2 atm and 273 K?

Choices: a. 1.12 L b. 10L c. 11.2L d. 112L

ANSWER: c. 11.2L

SOLUTION ( IF PROBLEM -SOLVING) V= 224 L x (n/1mol) x (1atm/2atm) =11.2L

QUESTION: It is a borosilicate glass with a very low coefficient of thermal expansion, hence, it's

wide for cooking and serving utensils.

Choices: a. Lime Glass b. Pyrex c. Silicones d. Zeotites

ANSWER: b. Pyrex

QUESTION: What is the mass in kilograms of 10.5 gal (39.7 L) of gasoline with a specific gravity of

0.82.

Choices: a. 10.5 kg b. 28 kg c. 33 kg d. 44 kg

ANSWER: 33 kg

SOLUTION ( IF PROBLEM -SOLVING) Specific gravity of gasoline is 0.82 Density = 0.82 times the density of water Density= specific gravity x density of water =(0.82)(0.997) = 0.82 g/mL V=39.7L = 39700 mL M= D x V =(0.82)(39700) =33 kg

QUESTION: It is a colorless solid capable of being cut into brilliant crystals is the hardest, must

abrasive mineral known

Choices: a. Graphite b. Charcoal c. Diamond d. Silicon

ANSWER: c. Diamond

QUESTION: It is the calculation of both energy balances and material balances in a chemical system.

Choices: a. Molarity b. Molality c. Calorimetry d. Stoichiometry

ANSWER: d. Stoichiometry

QUESTION: _________ involves the replacement of one of the atoms or groups of atoms attached to the carbon “Backbone” of the organic molecule.

Choices: a.halogination b. chemical reaction c. Addition reaction d. Substitution Reaction

ANSWER: Substitution Reaction ( D )

QUESTION: Calculate the volume (in Litres) occupied by 7.40g of NH3 at STP (Standard Temperature, and Pressure)

Choices: a. 8.73L b. 10.73L c . 9.73L d. 12.73L




REACTION”

ANSWER: c. 9.73L

SOLUTION ( IF PROBLEM -SOLVING) Recognizing that 1mole of an ideal gas is equal top 22.4L at STP and using the molar mass of NH3 (17.03g) V = 7.40g NH3 x 1 mol NH3 x 22.4L__ = 9.73L 17.03g NH3 1 mol NH3

QUESTION: It is the Energy change accompanying a mole of electrons being added to a mole of a gaseous atoms or ions.

Choices: a. Electronic Affinity b. Bingling Energy c . Biochemical Energy d. Fission

ANSWER: a. Electronic Affinity

QUESTION: A 466g sample of Water is Heated from 8.50’C to 74.60’C. Calculate the amount of Heat Absorbed (in Kilo Joules) by the Water.

Choices: a. 130 KJ b. 129 KJ c . 192 KJ d. 160 KJ

ANSWER: b. 129 KJ


q = mst = (466g)(4.184 J/g ‘C)(74.60’C – 8.50’C) = 129 KJ

QUESTION: A silicon chip used in an integrated circuit of a microcomputer has a mass of 5.68mg. How many silicon (Si) atoms are present in this chip?

Choices: b. 5.6x10-3 atoms b. 2.02x1010atoms c . 1.22x1020atoms d. 2.22x1020atoms

ANSWER: c. 1.22x1020atoms

SOLUTION ( IF PROBLEM -SOLVING) 5.68mg Si x 1g Si x 1mol Si x 6.022x1023 = 1.22x1020atoms 1,000 mg Si 28.08 g Si 1 mol Si

QUESTION: This Law states that if a process can be written as the sum of several stepwise processes, the Enthalphy change the total process equals the sum of the Enthalphy changes of the Various Steps.

Choices: a. Gauss Law b. Hess Law c . Boyles Law d. Newton’s Law

ANSWER: c. Hess Law

QUESTION: This process separates the components of a mixture on the basis of differences in particle size. It is used most often to separate a liquid from a solid.

Choices: a. Crystallization b. Extraction c. Filtration d. Chromatography

ANSWER: c. Filtration

QUESTION: Sulfur Hexafluoride (SF6) is a colorless, odorless, very unreactive gas. Calculate the pressure (in atm) exerted by 1.82 moles of gas in a steel vessel of volume 5.43L at 45°C.

Choices: a. 6.75 atm b. 7.75 atm c. 8.75 atm d. 9.75 atm

ANSWER: c. 8.75 atm




REACTION”

SOLUTION ( IF PROBLEM -SOLVING) P = _nRT_ V P = (1.82mol) (0.0821L.atm/K.mol) (45+273K) 5.43 P = 8.75 atm

QUESTION: It is defined as the pressure exerted by a force of one newton acting on an area of one square meter.

Choices: a. Kelvin b. Meter c. Pascal d. Newton

ANSWER: c. Pascal

QUESTION: A bottle of certain ceramic tile cleanser, which essentially a solution of hydrogen chloride, contains 130g of HCl and 750g of water. What is the percent by mass of HCl in this cleanser?

Choices: a. 15.7% b. 16.3% c. 14.8% d. 13.8%

ANSWER: c. 14.8%

SOLUTION ( IF PROBLEM -SOLVING) The percent by mass of the solute is: %solute = mass solute_ x 100 mass solution %solute = ____130g____ x 100 130g + 750g %solute = 14.8%

QUESTION: A covalent bond between two atoms with different electronegativities, so that the electron density is unsymmetrically distributed.

Choices: a. Non- Polar bond b. Polar bond c. Single bond d. Triple bond

ANSWER: b. Polar bond

QUESTION: Which element has the highest ionization potential of its atom?

Choices: a. Hydrogen b. Oxygen c. Helium d. Zinc

ANSWER: c. Helium

QUESTION: It is the minimum amount of radioactive material needed to sustain a nuclear chain reaction.

CHOICES: a. Molar mass b. Critical mass c. Molecular mass d. Atomic mass unit

ANSWER: b. critical mass

QUESTION: In the atmosphere, nitrogen dioxide reacts with water to produce nitric acid, which contributes to pollution by acid rain: 3NO2(g) + H2O(l) -----> 2HNO3(aq) + NO(g) How many grams of HNO3 are produced for every 1.0mol of NO2 that reacts? The molecular weight of HNO3 is 63.0amu.

CHOICES: a. 42 g HNO3

b. 42 kg HNO3

c. 4.2 g HNO3

d. 42 mg HNO3

ANSWER: a. 42 g HNO3

SOLUTION (IF PROBLEM SOLVING) 1.0mol NO2(2mol HNO3/3mol NO2)(63g HNO3/1mol HNO3)=42g HNO3

QUESTION: _________ states that a constant pressure and temperature, the volume of a gas is directly proportional to the number of moles present.

CHOICES:




REACTION”

a. Boyle’s Law b. Charle’s Law c. Gay-Lussac’s Law d. Avogrado’s Law

ANSWER: d. Avogadro’s Law

QUESTION: ______ states that in the addition of polar reagents to alkenes, the positive portion of the reagents adds to the carbon atom in the double bond that already has the most hydrogen atoms.

CHOICES: a. Markovnikou’s rule b. Le Chatelier’s

principle c. Lock-and-key theory

d. Pauli Exclusion Theory

ANSWER: a. Markovnikou’s rule

QUESTION: _______ are atoms that have completely filled ns and np subshells, giving them great stability.

CHOICES: a. Alkali Metals b. Noble Gases c. Halogens d. alkaline earth

metals

ANSWER: b. Nobles Gases

QUESTION: _______ states that the partial pressure of a solvent over a solution is given by the vapor pressure of the pure solvent times the mole fraction of the solvent in the solution.

CHOICES: a. Dalton’s law of partial pressure

b. de Broglie’s hypothesis

c. Aufbau principle d. Raoult’s Law

ANSWER: d. Raoult’s Law

QUESTION: It occurs when a cutting action is applied as you would see with scissors, tin snips, or punches.

Choices: a. Direct shear c. Torsional shear b. Bending stress d. Torsional stress.

ANSWER: a. Direct shear

QUESTION: It occurs when a member carries a load perpendicular to its long axis while being supported in a stable manner.

Choices: a. Direct shear c. Torsional shear b. Bending stress d. Torsional stress.

ANSWER: b. Bending stress

QUESTION: It is the internal resistance offered by a unit area of the material from which a member from which a member is made to an externally applied load.

Choices: a. stress b. strain c. moment d. torque

ANSWER: a. stress




REACTION”

QUESTION: A certain support stand design to carry downward loads. Compute the stress in the square shaft at the upper part of the stand for a load of 27,000 lb. The line of action of the applied of the applied load is centered on the axis on the shaft, and the load is applied through a thick plate that distributes the force to the entire cross section of the stand.

Choices: a. 10,000psi b. 11,000psi c. 12,000psi d. 13,000psi

ANSWER: c. 12,000psi


QUESTION: The proportional limit is the value of stress on the stress-strain diagram curve at which the curve first deviates from a straight line.

Choices: a. Proportional limit b. Elastic limit c. Yield point d. Tensile point

ANSWER: a. Proportional limit

QUESTION: It is the value of stress on the stress-strain curve at which the material has deformed plastically; that is, it will no longer return to its original size and shape after removing the load.

Choices: a. Proportional limit b. Elastic limit c. Yield point

d. Tensile point

ANSWER: b. Elastic limit

QUESTION: It is the value of stress on the stress-strain curve at which there is a significant increase in strain with little or no increase in stress.


ANSWER: c. Yield point

QUESTION: It is the highest value of apparent stress on the stress-strain curve.


ANSWER: d. Tensile point

psiin

lb

in

lb

A

F000,12000,12

25.2

000,2722




REACTION”

QUESTION: It is a measure of the stiffness of a material determined by the slope of the straight-line portion of the stress-strain curve.

Choices: a. Modulus of elasticity b. Modulus of rigidity c. Strain d. Stress

ANSWER: a. Modulus of elasticity

QUESTION: A ductile material is one that can be stretched, formed, or drawn to a significant degree before fracture. A metal that exhibits a percent elongation greater than ____ % is considered to be ductile.

Choices: a. 2 b. 3 c. 4 d. 5

ANSWER: d. 5

QUESTION: A brittle material is one that fails suddenly under load with little or no plastic deformation. A metal that exhibits a percent elongation ____ 5.0% is considered to be brittle.

Choices: a. equal b. Greater than c. Less than d. It depends on the room temperature

ANSWER: c. . Less than

QUESTION: The ratio of shearing stress to shearing strain is called:

Choices: a. Modulus of elasticity b. Modulus of rigidity c. Modulus of elongation

d. Modulus of stressibility

ANSWER: b. Modulus of rigidity

QUESTION: It is the ability of a material to absorbed applied energy without failure

Choices: a. Ductility b. Brittleness c. Hardness d. Toughness

ANSWER: d. Toughness

QUESTION: It is the indication of the resistance of a material to indentation by a penetrator.

Choices: Ductility b. Brittleness c. Hardness d. Toughness

ANSWER: c. Hardness

QUESTION: It is a measure of pulling and pushing force.

Choices: a. Axial force b. Shear force c. Torque

d. Bending moments




REACTION”

ANSWER: a. Axial force

QUESTION: It is the measure of the total resistance to sliding.


d. Bending moments ANSWER: b. Shear force

QUESTION: It is the measure of the resistance to twisting.


d. Bending moments ANSWER: c. Torque

QUESTION: A common bar suspended from certain support has axial load of 10kN. If the bar has a cross section of 20mm2, find the stress experience by the bar.

Choices: a. 350MPa b. 420MPa c. 485MPa d. 500MPa

ANSWER: d. 500MPa

MPamx

N500

1020

000,1026

QUESTION: Assume that a 25-mm diameter rivet joins the plates that are each 125 mm wide. The allowable stresses are 130 MPa for bearing in the plate material and 65 MPa for shearing of the rivet. Determine the minimum thickness of each plate.

Choices: a. 10MPa b. 20MPa c. 30MPa d. 40MPa

ANSWER: d. 40MPa


QUESTION: A cylinder pressure vessel is fabricated from plates which have a thickness of 20mm. The diameter of the pressure vessel is 450 mm and its length is 3.5m. Determine the maximum internal pressure which can be applied if the stress in the steel is limited to 150MPa.

kNPV

mm

VM

d

V

91.31

)25(65

2

4

2

4

mmt

Mmm

kPat

d

Pt

dt

P

b

b

82.9

130)25(

91.31

MPa

mmmmmmmm

kNkN

A

P

89.39

]8258125[

91.31




REACTION”

Choices: a. 15.33MPa b. 16.67MPa c. 17.53MPa d. 18.83MPa

ANSWER: 16.67MPa •


MPa

mm

mmMPa

t

Dt

67.16

)25(2

)450(150

2

QUESTION: The wall thickness of a 3ft-diameter spherical tank is 4/17 in. Calculate the allowable internal pressure if the stress is limited to 9000 psi.

Choices: a. 155.47psi b. 169.25psi c. 176.47psi d. 188.73psi

ANSWER: c. 176.47psi


QUESTION: A steel bar 40mm in diameter and 3m long is surrounded by a shell of cast iron 6mm thick. Compute the load that will compress the combined bar a total of 0.95 mm in the length of 2m. For steel E=300GPa, and for cast iron, E=150GPa.

Choices: a. 151kN b. 161kN c. 171kN d. 181kN

ANSWER: b. 161kN


psi 47.176

)17/4(4

)124(9000

4

p

in

inp

t

pD

kNP

GmmmmGmm

P

AE

mPm

AE

PL

57.160

150])40()52[(300)40(

)3(1095.0

)2(108.0

22

4

2

4

3

3

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