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FREE QUIZ BOWL AND STUDY GAMES ABOUT
SB-PHYSICAL SCIENCE EXAM QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -86 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: MC- Which of the following liquids at room temperature and 1 atmosphere
would have the GREATEST surface tension:
W). distilled water X). ethanol Y). methanol Z). acetone
Answer:
W). DISTILLED WATER
Question 2: SA - What is the name for the biochemical process that converts grape juice into wine or soy beans into soy sauce?
Answer:
FERMENTATION
Question 3: SA - Which one of the four basic forces of the universe is most directly involved with maintaining the planets in their orbits?
Answer:
GRAVITY
Question 4: SA- Order the following 4 colors of light from the one with the
LONGEST wavelength to the SHORTEST wavelength: orange; violet; red; yellow
Answer:
RED; ORANGE; YELLOW; VIOLET
Question 5: MC- Which of the following chemical formulas gives an indication of the
arrangement of atoms and bonds in a chemical compound:
W). empirical X). molecular Y). structural Z). polyatomic
Answer:
Y). STRUCTURAL
Question 6: SA - How many protons are present in a single helium nucleus?
Answer:
2 Question 7: MC- Which of the following BEST explains why a concrete floor feels colder than a wooden floor if both are at 21*C W). wood is not as dense as concrete X). concrete conducts heat better than wood Y). wood is alive and concrete is not
Answer:
X). CONCRETE CONDUCTS HEAT BETTER THAN WOOD
Question 8: SA- What is the most commonly used scientific name for the
compound with the chemical formula C6H12O6, which is a product of photosynthesis?
Answer:
GLUCOSE
(ACCEPT: D-GLUCOSE OR DEXTROSE)
Question 9: SA- A car is traveling at a constant speed of 20 kilometers per hour on a long straight road. How many minutes will it take to travel a distance of 5 kilometers?
Answer:
15
Question 10: SA- Arrange the following 3 pure substances in order of
INCREASING melting points at 1 atmosphere of pressure: iron; oxygen; water
Answer:
OXYGEN; WATER; IRON
Question 11: SA - To the first decimal place, what is the ideal mechanical advantage of a lever with a resistance arm of 200 centimeters and an effort arm of 3.4 meters?
Answer:
1.7
(Solution: MA = EA/RA = 340/200 = 1.7)
Question 12: MC- Which of the following is LEAST accurate regarding
the element helium:
W)it is the second most abundant element in the universe
- it is constantly escaping from Earth's atmosphere into space
- it is toxic to humans even is very low concentration
Answer:
Y). IT IS TOXIC TO HUMANS EVEN IN VERY LOW CONCENTRATIONS
Question 13: SA- What is the wavelength, in meters, of a sound wave that
has a frequency of 4 kilohertz and a speed in a medium of 400 meters per second?
Answer:
0.1
Question 14: MC- Which of the following is an electronic device that
amplifies electronic signals and was used as a switching device in the first electronic
computers:
- vacuum tubes
- crystals
- potentiometers
- rheostats
Answer:
W). VACUUM TUBES
Question 15: MC- Which of the following is generally NOT true: W)boiling point of water decreases w/ increased altitude on Earth
- the melting point of table salt is much higher than glucose
- radon is radioactive
- metals react w/ nonmetals to form new metals
Answer:
Z). METALS REACT WITH NONMETALS TO FORM NEW METALS
Question 16: MC- Which of the following is NOT a spontaneous
reaction under normal atmospheric pressure:
- rusting of a ship's hull at sea
- liquid water changing to water ice at 25ºC
- the combustion of propane in air
- evaporation of water above 212ºF
Answer:
X). LIQUID WATER CHANGING TO WATER ICE AT 25ºC
Question 17: SA- According to Charles's gas law, the volume of a fixed
amount of gas varies directly with what property?
Answer:
TEMPERATURE
Question 18: MC- Chemical bonding between which of the following
pairs of atoms would MOST likely be ionic:
- copper and chlorine
- carbon and carbon
- hydrogen and carbon
- sulfur and oxygen
Answer:
W). COPPER AND CHLORINE
Question 19: SA- Using a gravitational acceleration of 10 meters per second
and giving your answer in appropriate SI units, if dropped off a cliff, how fast will a rock be falling at the end of 2 seconds, if friction is ignored?
Answer:
20 METERS PER SECOND (must give units) Question 20: SA - What is the most common term for the ratio of the output force to the input force of a simple machine?
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