15.GEAS Q&A COMPILATION PART 1 What refers to the number of nuclei (atoms) per unit volume?

1. What material has a body-centered cubic ANS. MOLECULAR DENSITYcrystalline structure? ANS. CHROMIUM 16. What is the approximate radius of an

atom? 2. What material has a hexagonal closed- ANS. 10^-14 m packed crystalline structure?ANS. ZINC 17. What is the process of gaining or losing

electrons?3. What is an elementary particle that has no ANS. IONIZATIONcharge, has zero rest mass and travels at thespeed of light? 18. How many protons, neutrons andANS. NEUTRINO electrons are in the carbon isotope 14C6?

ANS. 6 PROTONS, 6 ELECTRONS AND 84. What particle consists of two down and NEUTRONSone up quarks ANS. NEUTRON 19. One mole of electron has a charge equal

to __ C. 5. What particle consists of two up and one ANS. 96,500 down quarks?ANS. PROTON 20. What is the characteristic sign of the

magnetic susceptibility of ferromagnetic6. What particles have rest masses ranging material?… to about 0.1 amu? ANS. POSITIVEANS. MESONS

21. Heavy atoms have more __ than __.7. What particles include the electron, the ANS. NEUTRONS, PROTONSmu particle and the neutrino?ANS. LEPTONS 22. What is otherwise known as retentivity of

magnetic materials?8. What are the particles that include the ANS. REMANENCEproton and the neutron?ANS. BARYONS 23. What is the process in which hydrogen is

changed into helium inside the sun and9. What is the most common alloying makes the sun shine?ingredient in copper? ANS. FUSIONANS. ZINC

24. What is the other term for negative 10. What alloy of nickel has 15 to 20% electron?chromium and has high electrical resistance? ANS. NEGATRONANS. NICHROME

25. What is the reciprocal of atomic mass unit11. What alloy of nickel has 40 to 60% copper in grams?used in thermocouple? ANS. AVOGADRO’S NUMBERANS. CONSTANTAN

26. What is the value of unified atomic mass12. What alloy of nickel used in thermostats unit (amu)? with low or zero thermal expansion? ANS. 1.660 x 10^-27 kgANS. INVAR

27. What term describes the numeric measure13. Silicon becomes an extrinsic of the polarization or displacement of semiconductor with electrons as the majority electrons in atoms or molecules of acarrier when doped with what material? dielectric?ANS. ANTIMONY ANS. ELECTRIC SUSCEPTIBILITY

14. What material is used by permanent 28. What is the individual angular momentummagnet as the magnetic material? of the neutron, proton and electron?ANS. HARDENED STEEL ANS. h/4pi

GEAS Q&A COMPILATION PART 2 12. Law that created the National InformationTechnology Council.

1. What is the partly illuminated part of a ANS. E.O. 469shadow called? ANS. PRENUMBRA 13. What law created the MTRCB?

ANS. P.D. 19862. What temperature scale using absolutezero as the zero point with scale divisions the 14. Which of the following is considered thesame as Centigrade scale? first instance of government regulation ofANS. KELVIN SCALE radio technology?

ANS. RADIO ACT OF 1910 3. The term “standard temperature” refers to the temperature of 15. Which among the Philippine CongressionalANS. MELTING ICE, 0 C Issuances provides for the installation,O

operation and maintenance of public4. telephones and/or public calling stations in What refers to the temperature of boiling

each municipality in the Philippines? water under the pressure of exactly 760mmANS. R.A. 6849of mercury or 100 C?O

ANS. STEAM POINT 16. Effectivity of R.A. 9292.ANS. MAY 27, 20045. What refers to an electromagnetic waves

shorter than visible light but longer than x- 17. R.A 9292 was approved by Presidentrays?Gloria Macapagal Arroyo on what date?ANS. ULTRAVIOLET LIGHTANS. APRIL 17, 2004

6. “The force between two point charges is 18. Policy guidelines for compulsory directly proportional to the product of their interconnection of authorized public magnitudes and inversely proportional to the telecommunications carrier in the Philippines.square of the distance between them.” ANS. E.O. 59ANS. COULOMB”S LAW OF

ELECTROSTATICS 19. What E.O. regulates the operation of CATVsystems in the Philippines?7. “The force between two magnetic poles isANS. E.O. 205directly proportional to the strengths of the

poles and inversely proportional to the square 20. The law governing the regulation of radioof their distance apart.” communications in the Philippines is ___. ANS. COULOMB”S LAW OF MAGNETISMANS. ACT 3846

8. The emission of electrons from a heated 21. What is the maximum fine for anymetal in a vacuum is known as _____.

ANS. EDISON EFFECT violation of R.A. 3846, an act regulating radiostations and radio communications in the

9. Which of the following is the policy Philippines?guidelines to govern the operations of cable ANS. P 4,000TV in the Philippines? ANS. E.O. 436 22. The process used to separate liquids due

to the difference in their boiling point.10. What law is about the vesting of ANS. DISTILLATIONjurisdiction, control and regulation over the Philippine Communications Satellite 23. Sublimation is the direct transfer from theCorporation with NTC? ____ state.ANS. E.O. 196 ANS. SOLID TO GASEOUS

11. The executive order signed by former 24. When solid materials melt, thePresident F. Ramos last March 1998 providing intermolecular forces _____.the national policy in the operation and use of ANS. DECREASE international satellite communications in thePhilippines. 25. The change from gaseous to liquid state isANS. E.O. 467 known as ____.

ANS. CONDENSATION

GEAS Q&A COMPILATION PART 3 ANS. SPECIFIC HEAT

1. Who said to be the founder of the 15. According to the kinetic theory of gases,scientific method? the pressure of a gas is given by the ANS. GALILEO GALILEI expression p=2E/3V, where E is the total ___.

ANS. KINETIC ENERGY OF THE2. The international system of units (SI) has MOLECULEShow many base units?

16.ANS. 7 N molecules, each of mass m of gas A and2N molecules, each of mass 2m of gas B are

3. Physical properties of matter include ___. contained in a vessel at temperature T. TheANS. COLOR, FORM, DENSITY AND mean square of the velocity of molecules of BOILING POINT gas B is v and the mean square of x 2

component of the velocity of gas A is w. The2

4. The 18 elements potassium (K) through ratio w /v is __.2 2

krypton (Kr) are found in group __ of the ANS. 2/3periodic table.ANS. 4 17. With the propagation of a longitudinal

wave through a material medium the5. Chemical concentration are most often quantities transmitted in the propagationexpressed as direction are __ and __. ANS. PPM OR PARTS PER MILLION ANS. ENERGY, LINEAR MOMENTUM

6. Hydrogen makes up roughly what % of 18. Among air, water, vacuum and iron, whichthe universe’s visible mass? medium does sound travels the fastest?ANS. 90% ANS. IRON

7. What are the parts of “opposite theory”? 19. The speed of waves travelling along aANS. OXIDATION AND REDUCTION stretched rope will increase when the rope is

__.8. Iron can form how many ions? ANS. STRETCHED BY A HEAVIER LOADANS. 2

20. If the stem of a vibrating tuning fork is9. Frederick Soddy named isotopes from the pressed against a tabletop, __ will increase.Greek word “iso” meaning __. ANS. LOUDNESSANS. SAME PLACE

21. The phenomenon of dumping results in10. Transmutation occurs when the nucleus of decrease in __.an element is ___. ANS. AMPLITUDEANS. HIT BY PARTICLES OF ANOTHER ELEMENT 22. Echo is formed as a result of __ of sound.

ANS. REFLECTION11. At sea level, a body will have minimum weight at __. 23. A speed of Mach 2 is approximately equalANS. EQUATOR to __ miles per hour.

ANS. 136012. If the Earth shrinks, what will be the effecton the value of the acceleration due to 24. Polarized light is passed through agravity? Polaroid. On viewing through the Polaroid, weANS. IT WILL INCREASE. find that when the Polaroid is given one full

rotation about the reflection of light, we 13. If there were a small gravitational effect, observed the intensity is ___. then what force undergo a change? ANS. TWICE MAXIMUM AND TWICE ZEROANS. ARCHIMEDES’ UPLIFT

25. Ray optics is valid when characteristic14. On a sunny day at the beach, the sand dimensions are __ the wavelength of light.gets so hot and the water stays relatively cool ANS. MUCH LARGER THANis due to the difference in __ of water andsand.