rev
DESCRIPTION
sdfsdfdsfsdfsdfdfsdfsdfsdfsdfsTRANSCRIPT
1. What is the color of chlorine in gaseous form?ANS: greenish yellow
2. What defines the total energy of the electron?ANS: principal quantum number
3. What refers to a perfect absorber of radiation and an ideal radiator?ANS: blackbody
4. What is formed when the ray actually pass through the image after refraction?ANS: real image
5. The objective of the astronomical telescope is to form an image which is ____ and _____.ANS: real, diminished
6. A telescope has an objective of focal length 60 cm and an eyepiece of focal length 3 cm. Themagnification power is ___.ANS: 20
7. Under RA 9292, Electronics Technician can apply for registration without examination within ___ years after the effectivity of the republic act.ANS: 5
8. The maximum continuous term of office of a member of the Board of Electronics Engineers is ___ years.ANS: 6
9. The frequency of vibration in the string of a sonotome with tension T is f. If the vibrating length is halved, keeping the tension constant, the frequency is ___.ANS: 2f
10. “Parsec” is a unit of ___.ANS: distance
11. One Coulomb is equal to ___.ANS: 1 Ampere x 1 second
12. What is the SI unit of kinematic viscosity?ANS: m2/s
13. What is the ration of absolute viscosity over density?ANS: kinematic viscosity
14. Cations are ___ their parent atoms.ANS: smaller than
15. Anions are ___ their parent atoms.ANS: larger than
16. It states that, “volume is proportional to mole at constant pressure and temperature.”.ANS: Avogadro’s Principle
17. A type of enthalpy that is associated by the giving up of electron from a specie in the gaseous state.ANS: enthalpy of ionization
18. One mole of electron has a charge of ___.ANS: 96,500 C
19. If the Earth shrinks, the acceleration due to gravity will ___.ANS: increase
20. Water forms a concave meniscus in a glass tube because water molecules form ___ with oxygen atoms at a clean glass surface.ANS: Hydrogen bonds
21. On a sunny day at the beach, the sand gets too hot while the water stays relatively cool. This is due to the difference in ___ of water and sand.ANS: specific heat
22. According to the kinetic theory of gas, the pressure of a gas is given by the expression p = 2E/ 3V, where E is the total ___.ANS: kinetic energy of the molecules
23. Among air, water, vacuum, and iron, where do sound waves travel fastest?ANS: iron
24. The wave travelling on a stretched rope will increase its speed by ___.ANS: stretching the rope with a heavier load.
25. If the stem of a vibrating tuning fork is pressed against a tabletop, ___ is increased.ANS: loudness
26. A change in genetic material of living cells.ANS: mutagens
27. The procedure often used to purify product of organic preparation.ANS: recrystallization
28. The existence of two or more crystalline form of a substance.ANS: polymorphism
29. Pressure in bar under normal condition.ANS: 1 Bar
30. Unwanted reaction that reduces the yield of the product of the main reaction.ANS: side reaction
31. The molecular shape of a molecule having 6 electron pairs around its central atom.ANS: octahedral
32. If there were a small gravitational effect, then the force that undergo change is ___.ANS: Archimedes’ uplift
33. A carbohydrates that consists of long chains of glucose unit.ANS: starch
34. The ionic connection between the solutions of 2 half cell that make up a electrochemical cell.ANS: salt bridge
35. With the propagation of longitudinal waves through a material medium the quantities being transmitted with the propagation direction are ___.ANS: energy and linear momentum
36. N molecules, each of mass m of gas A and 2N molecules, each of mass m of gas B, are contained in a vessel at temperature T. The mean square of the velocity of molecules of gas B is v2 and the mean square of the x component of the velocity of gas A is w2. The ratio w2/v2 is ___.ANS: 2/3
37. The ability of a material to conduct heat.ANS: thermal conductivity
38. The larger the thermal conductivity the ___.ANS: the faster the heat transfer
39. A system that undergoes change under constant pressure.ANS: isobaric
40. A system undergoes change and the temperature stays constant.ANS: isothermal
41. ___ is the energy radiated by an object when 1kg or 1cu. m of it is completely burned.ANS: heat of combustion
42. A second hand value for it is the sum of money which the machine will be sold to another company or second hand user.ANS: salvage value