MULTIPLE CHOICE.
1. Most cars have ‘’four-stroke internal combustion engines.” Which of
the following gives the correct sequence of the four strokes?
A.
Power-compression-intake-exhaust
B. Compression-exhaust-power-intake
C.
Intake-power-compression-exhaust
D.
Intake-compression-power-exhaust
2. The image in a plane mirror is _______________.
A. Inverted, virtual with a magnification of 1
A. Inverted, virtual with a magnification of 1
B. upright, real
with a magnification of 2
C. inverted, real
with a magnification of ½
D. upright,
virtual with a magnification of 1
3. Which of the following wave characteristics remains unchanged when a
wave crosses a boundary into a different medium?
A. Velocity C.
Frequency
B. Amplitude D.
Wavelength
4. Which of the following electromagnetic radiations has the lowest
frequencies?
A. Gamma rays C.
Ultraviolet rays
B. Radio waves D.
X-rays
5. If something gets a positive electric charge, then follows that
something else__________.
A. become
magnetized
B. becomes equally
negatively charged
C. becomes equally
positively charged
D. becomes
negatively charged, but not necessarily equally negatively charged
6. Hydrocarbons which do NOT have maximum number of hydrogen atoms are
_______.
A. aromatic C. saturated
A. aromatic C. saturated
B. isometric D.
unsaturated
7. Metals have been used for making coins and jewelry. Which of the following
characteristics is true of metals?
A. Metals are
malleable and ductile
B. Metals have
high tensile strength
C. Metals are good
conductors of heat and electricity
D. all of the
above
8. Which of the following is that single force applied at the same
point that will produce the same effect?
A. reactant force C.
resultant force
B. composite force D.
concurrent force
9. How many grams of chloral are needed to produce 10.5 g of DDT?
A. 10.5 g C.
4.36 g
B. 8.72 g D.
13.1 g
10. The half-life Carbon- 14 is 6739 years. Suppose a container was
found to contain one half as much Carbon- 14 as a new basket of the same
material. What is the approximate age of the bowl?
A. 3716 years C.
2856 years
B. 1432 years D.
6739 years
11. What kind of energy is present whenever a body is at a distance
from the ground?
A. elastic
potential energy
B. electric
potential energy
C. electromagnetic
potential energy
D. gravitational
potential energy
12. A lunar eclipse occurs when the ____________.
A. moon is between
the sun and the earth
B. moon, earth and
sun form a right angle
C. earth is between
the moon and sun
D. sun is in
between moon and earth
13. How long does it takes the moon to go through all of its phases?
A. 1 year B. 29 ½ days C. 24 hours D. 27 1/3 days
14. Which of these minerals is present in seawater with the highest
percentage?
A. Sodium chloride C.
Magnesium chloride
B. Magnesium sulfate D.
Calcium sulfate
15. What must be the minimum length of a plane mirror in order for you
to see a full view o f yourself?
A. Your full
height C.
One-half
B. One-forth D.
Three-fourths
16. At what particular instance will the period and frequency of a wave
changed?
A. When it travels
from one medium to another
B. When it is at
its equilibrium position
C. When it
interferes with another wave
D. When it
reflects
17. What laws states that there is decrease in pressure at the side of
a moving stream of fluid?
A. Bernoulli’s Law C.
Archimedes’ Law
B. Pascal’s Law D. Hooke’s Law
18. Whose discovery involved the production of magnetism by means of
electricity?
A. Ohm B.
Lenz C. Faraday D. Oersted
19. In the absence of air friction, what happens when a balls allowed
to roll down one hill and up a second
hill?
A. The ball would
lose speed more slowly as it moves up the second hill.
B. The ball would
travel a longer distance uphill.
C. The ball would
travel a shorter distance as it moves up.
D. The ball would
practically reach the same horizontal level from where it started.
20. A car travels at 80 km/hr for 0.5 hr, then goes 100 km/hr for 1
hour, and finally 60 km/hr for 0.5 hr. What is the average speed for the 2-hour
travel?
A. 80 km/hr C.
100 km/hr
B. 90 km/hr D.
85 km/hr
21. In Moh’s scale, which is the softest and the hardest mineral?
A. Talc – Diamond C.
Calcite – Feldspar
B. Gypsum – Quartz D. Talc
– Corundum
22. According to the kinetic molecular theory, liquids are similar to
solids in that ___________
A. their molecules
are arranged in a regular manner.
B. the motion of
their particles changes with temperature.
C. the motion of
their particles cannot be determined.
D. there is very
little space between their molecules.
23. When two or more objects collide the quantity that does NOT change
is the total __________.
A. Momentum of all
the objects C.
kinetic energy of all the objects
B. kinetic energy
of each object D.
momentum of each object
24. What is the correct formula for finding the efficiency of a
machine?
A. Efficiency =
input force /output force x 100%
B. Efficiency =
output force/input force x 100%
C. Efficiency =
output work/input work x 100%
D. Efficiency =
input work/ output work x 100%
25. The energy of a hammer hitting a nail is
A. heat C.
electric
B. chemical D.
mechanical
26. Disregarding air resistance, an object falling towards the earth’s
surface has an acceleration that is _____________.
A. decreasing C.
constant
B. increasing D. depending on object’s weight
27. If the moon’s gravity becomes 1/4 that of Earth, which of the
following will apply?
I. The moon will no longer cause tides on the earth’s
oceans.
II. A 65–kilo person on earth will weigh about
18 kilos on the moon.
III. It will be easy to lift heavy objects on the
moon.
IV. The moon will not hold a thick atmosphere of
gasses.
A. II, III and IV C. I, II and III
B. I, II and IV D. I, II, III and IV
28. The headings of a car with a 12V electrical system are 40W each the
tail lights 6.0 W each, and the radios is 20 W. What is the total power of this
circuit?
A. 1200 W C.
110 W
B. 240 W D.
3600 W
29. Abundance of waste materials in water decreases primary
productivity due to ___________.
A. blockage of light penetration
A. blockage of light penetration
B. amount of
nutrients available
C. reduced amount
of oxygen in the water
D. accumulation of
aquatic organisms
30. What is the direction of the magnetic field in an electromagnetic
wave?
A. parallel to the
electric field C.
parallel to the motion
B. perpendicular
to the electric field D.
random
31. A ball of mass 0.15 is thrown with a speed of 20 m/s against a
wall. What is its momentum if it rebounds after colliding elastically?
A. +3.0 kg m/s B. -30 kg m/s C. -3.0 kg m/s D. +30 kg m/s
32. How are echoes minimized in halls and auditoriums?
A. covering hard
reflecting surfaces with curtains
B. opening the
doors of the auditoriums
C. creating a
wider space for sound to travel
D. limiting the
accessories installed inside
33. A large depression caused by a collapse of the slopes of a volcano
is called a _________.
A. basin C.
base level
B. syncline D.
caldera
34. Where does the pick up needle on a phonograph move the fastest
across the record?
A. At the end
B. The needle move
at the same speed throughout
C. In the middle
of the phonograph record
D. At the
beginning
35. Compared to the density of seawater, a kind of fish that lives at
the bottom of the ocean has a density that is __________.
A. lesser C.
same
B. greater D.
equal
36. The additional of Br2 is used as the reaction to distinguish
between alkenes and alkanes. Which of the following observations accompanies
this test?
A. When Br2 is
added to the double bond of alkenes to make a dibromide, it becomes colorless.
B. A bright red
color is produced when Br2 reacts with alkenes.
C. The red color
of bromine disappears when it dissolves in alkenes.
D. Bromine dissolved
in alkenes but not in alkenes.
37. Which statement is CORRECT about a rechargeable battery?
A. Its REDOX
reactions are not complete.
B. Its REDOX
reactions are not reversible.
C. Its REDOX
reactions are complete.
D. Its REDOX
reactions are reversible.
38. A ray of light is incident on a plane surface separating two
transparent substances of refractive indices 1.70 and 1.50. The angle of
incidence is 30 deg and the ray originates in the medium of higher index. The
angle of refraction is _________.
A. 79.0 C.
45.0
B. 34.5 D.
26.2
39. Chrome plating is one method to prevent corrosion. This process can
be carried out by_______.
A. using secondary
cells C. using primary cells
B. electrolytic
process D.
zone refining
40. What does the slope of the graph of stretching force against
elongation indicate?
A. elastic limit C.
gravitational limit
B. resistivity
constant D.
spring constant
GOOD LUCK! –Prof. Cris Paner
Answer Key:
Answer Key:
1.
D 11. D 21. A 31. C
2.
D 12. C 22.B 32. A
3.
C 13. B 23. A 33. D
4.
B 14. A 24. C 34. B
5.
D 15. C 25. D 35. D
6.
D 16. C 26. C 36. A
7.
D 17. A 27. C 37. D
8.
D 18. C 28. A 38. A
9.
D 19. A 29. C 39. B
10. D 20.
D 30. B 40. D
thank you po
ReplyDeleteNice.. It helps..
ReplyDeletemali ang number 9.the answer is c
ReplyDeletemali ang number 9.the answer is c
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